Quantcast
Channel: Popular Science | RSS
Viewing all 20161 articles
Browse latest View live

A Proposal To Save Electricity By Brightening The Moon

$
0
0

side by side photos showing scenes with duller and brighter moons
Before and After Moon Brightening
Foreo

Well, it gets points for creativity. Some pranksters—or perhaps just PR folks—at Foreo have put up a page proposing humankind solve its energy crisis by brightening the moon. A brighter moon would eliminate the need for nighttime streetlights, Foreo proposes. Super-moonlit streets would thus save electricity and reduce greenhouse gas emissions, the page says.

Now, I know Foreo is not serious, not least because it's a cosmetics company, not a space technology one. Nevertheless, I thought it'd be fun to look at some of the consequences of brightening the moon that the folks at Foreo might have missed:

1. It would probably take a lot of resources and emissions to ship any moon-brightening technology to the surface of the moon. It's not clear the environmental footprint of such a project would be smaller than its emissions savings. 

2. Nighttime light exposure is bad for human health. There's a lot of evidence that people who work night shift—those who spend their nights under artificial light—are at higher risk for certain cancers. Nighttime lighting has also been linked to obesity and depression, as Aeon reports. Keeping the world lit as bright as New York City at night would expose even more people to nighttime lights than already are.

3. Nighttime light is bad for the environment. Many animals also suffer from nighttime light exposure. It disrupts the navigation of species that travel at night. It also alters hormone production, which could lead to altered development and disease. In fact, instead of protecting the Earth's ecosystems, brightening the moon could disrupt them terribly.

Foreo proposes a 30-year-long phase-in period to allow people and animals to adjust to a brighter moon. That's not enough time for creatures to evolve, however. After all, Earth has had electric streetlights since the late 1800s and Earth's animals are still feeling the consequences.

The next question is, Why would a cosmetics company advertise with a weird space-tech proposal? I thought of a few possibilities:

  1. Someone at Foreo is a proponent of alternative energy technologies and this is brilliant satire.
  2. Someone at Foreo reads a lot of eager-beaver Kickstarter campaigns and this is brilliant satire.
  3. Foreo makes a face-scrubby thingy (?? This is why I'm not a beauty journalist) called "Luna." So maybe the message here is that while Foreo cannot make the moon brighter, it can make your face brighter. (?? Can you truly make your skin more reflective without putting, like, glitter on it? Maybe this is something I can actually answer in the future, as a science journalist.)

 









Whence Life? Receptors Responsible For Fertilization Found

$
0
0

A fertilized human egg
Wellcome Images
Where do babies come from? If your kids ever ask, just tell them the story of Izumo and Juno, receptors found on the surface of sperm and egg cells, respectively. In a study on mice published today in the journal Nature, researchers found that these two proteins allow the sperm and egg to recognize one another, leading to fertilization--and life as we know it. These receptors are found in many mammals, including humans. 

It previously wasn't known how sperm and egg recognized each other. Researchers have dubbed the egg's receptor Juno (previously known as folate receptor 4, which definitely doesn't have the same ring), in honor of the ancient Roman goddess of fertility and marriage, Reuters noted. The term Izumo derives from the word for a Japanese marriage shrine.

The Verge explains the study: 

To validate their findings, researchers bred mice that didn't produce Juno on eggs or Izumo on sperm. In both cases, these mice were unable to reproduce. Moreover, researchers realized that the Juno disappears from the surface of the egg moments after fertilization — an event they think reveals why eggs aren't usually fertilized by more than one sperm cell at a time. "This explains a 50-year-old mystery as to how eggs fuse with one — and only one — sperm so that there aren't too many chromosome contributed by the male which would result in a nonviable embryo," said [study co-author Gavin] Wright.

The study results could help infertile (human) couples have kids. The scientists are already screening infertile women to see if they have problems with their Juno receptors. If that is the case, these women may be able to undergo a procedure called intracytoplasmic sperm injection, which involves injecting the sperm into the egg and then re-implanting it. "It is remarkable that about 20 percent of infertility cases have an unexplained cause," co-author Enrica Bianchi of the Sanger Institute, told Reuters. "We are now asking whether Juno is involved in these cases of unexplained infertility."

[The Verge]








Survey Reveals What Today's America Thinks The Future Looks Like

$
0
0

A 1910 Vision Of A Future Helicopter
This image comes from an excellent series of French postcards made in the ealy 1900s about life in the 21st century.
Villemard, via Wikimedia Commons

In the next 50 years, Americans think they probably won't ride in driverless cars, that robots flying outside will have made everything worse, and that humans will be nowhere close to colonizing the solar system. Those are some of the conclusions from a Pew Research Center survey of 1,001 American adults on the future of technology and science, conducted this February and published today.

The trends reveal less about how technology will progress and more about how comfortable people are with different ways it could progress. Generally, people think technology will make life better in the future, with 59 percent of respondents seeing a brighter future. But they're either hesitant or ignorant about changes already under way, with 63 percent stating that opening the sky to personal and commercial drones will only make the future worse. Bad news for those respondents, as the FAA is already working to authorize drones in commercial airspace by 2020.

People are okay with putting lab-grown meat into their bodies, so long as it doesn't come through the mouth. Sixty-two percent of respondents think people will get new custom organs grown from them in a lab, but only 20 percent said they would eat meat grown in a lab. Americans are also wary of implanting computers in bodies, with 72 percent saying they wouldn't get a brain implant to improve memory and 53 percent saying implantable or wearable computers could only make the world worse. 

Survey respondents were also skeptical about space colonization, once a powerful theme in American fiction and futuristic thought, with only 33 percent seeing space colonies within our solar system in the next 50 years. Similarly intractable is weather: only 19 percent think we will control the weather. (Of course, that question ignores how human-caused global warming is already shaping weather, but that's less control than it is effect). Fifty-five percent of respondents also doubt teleportation will happen in the foreseeable future, which, combined with the lack of space colonies, keeps "Star Trek" further and further out of reach.








Turn A Tea Bag Into A Lantern

$
0
0

The tea bag lantern
Trevor Johnston

Every plain, paper tea bag conceals an exciting crash course in lift. In a six-second video on Vine, user “oh so tracy” empties a tea bag, folds it into a tube, and lights it on fire. After the bag burns down, the remains of the still-flaming tube flies into the air to create a miniature Chinese lantern. We asked Mark Drela, an aerodynamics professor at MIT, how it works. 

Cost: A few cents
Time: 2 minutes

Instructions:

1) Igniting the top of the tea bag warms air inside and above the paper tube, making that air less dense.

2) The hot air rises and draws in cooler air (primarily through the tube’s base).

3) Once most of the paper burns, the tea bag is light enough for the cool updraft to buoy it skyward.

WARNING: Burning paper can ignite other flammable objects, especially indoors. Kids (and pyromaniacs), please seek supervision before attempting.

Watch the results from the original Vine below:

This article originally appeared in the May 2014 issue of Popular Science.








Beard Fashions Are Governed By Darwinian Selection

$
0
0

Darwinian whiskers
Darwin had a righteous beard.
Julia Margaret Cameron via Wikimedia Commons
By the beard of Darwin! Some studies have shown that women generally like beards, while others show that whiskers make men appear older and more aggressive. New research suggests that it's all relative, though, and that men's beard fashions follow a pattern of Darwinian selection, becoming most attractive (to both women and men) when they are rare. 

In the study, published in the journal Biology Letters, the scientists asked 1,453 women and 213 men to rate the attractiveness of men with four different levels of "beardedness," with the extremes being clean-shaven and fully bearded. Study participants were either shown mostly full beards, mostly clean-shaven countenances, or a mixture of all four (with intermediate levels of light and heavy stubble). Both women--and men--said that heavy stubble and full beards were most attractive when they were rare, the BBC reported. Clean-shaven faces were also judged most desirable when they were not common. 

This is an example of negative frequency-dependent selection, in which traits are most desirable when they are rare. This "rule" explains why male guppies develop different bright colors, for example, the BBC noted. "Negative frequency-dependent preferences may therefore play a role in maintaining variation in men's beards and contributing to changing fashions," the researchers wrote. 

Does this imply that hipsters--infamous for doing the opposite of what's generally seen as cool--may be on to something? I'd tell you, but the answer involves some obscure filmmaker you probably haven't heard of. 








Toyota Has A Tron Bike

$
0
0

I have made this comparison before, and perhaps will again, but, damnit, this is a Tron bike, right? That is, inarguably, what this is.

The FV2 is a concept motorcycle from Toyota, set up only a little ostentatiously at the New York Auto Show. Instead of a steering wheel, the cycle turns when a driver leans into a curve. Instead of tires, it has flashing UFO discs. 

And it'll probably never hit the road. The plans for it are—we'll say ambitious. The cycle would learn about traffic ahead of jams, and give the driver the data through an augmented reality windshield. The cycle, according to Toyota, would eventually use facial recognition and heart monitoring to determine a driver's mood, and track usual destinations to help the driver get where they're going faster. 

It's likely more a sort of automotive think-piece than a real plan for a manufacturable vehicle. But, we can dream. 








Land Rover's New Concept SUV Doesn't Have Door Handles

$
0
0

Discovery Concept
Land Rover

Look closely at Land Rover's latest SUV concept and you might be able to see something missing: the door handles. The Discovery, you see, has evolved beyond the need for human hands—it will now allow you to enter and exit the vehicle only when its anatomically superior petrol-brain decides it is time. 

No, kidding. The doors are gesture-controlled—you open them with a wave of the arm. Although, along with that, Land Rover does have some major plans for a fleet of SUVs all based around the Discovery: gesture-controlled augmented reality windshields, an "invisible" hood drivers can see through—even, one day, eye-tracking controls. 

 

 

Of course, we haven't seen any of those features in action yet. The concept you see in the video above is only a baseline for SUVs yet to be released—the first of which, the just-announced Discovery Sport, we don't have any images of. (Will it have door handles? These are the Big Questions.)

But we want to believe in a future where we can flick our wrists and have a digital sun shade fall over the windshield. At the New York Auto Show, we caught up with David Saddington, studio director of interior design at Land Rover, so he could tell us more about the company's plans. In the meantime, we have that and some tantalizing digital demonstrations. 

 

 

 








Found: The Most Potentially Life-Friendly Exoplanet So Far

$
0
0

illustration of Kepler-186f
What Kepler-186f Might Look Like If It Has Clouds and Seas
NASA Ames/SETI Institute/JPL-CalTech

Five hundred light-years away, Earth has a cousin. Kepler data has revealed there's rocky planet out there that's similar in size to Earth and may have the right conditions for liquid water on its surface. It's the first planet ever discovered with both these Earth-like qualities.

Astronomers are constantly seeking more Earth-like exoplanets because, well, Earth is the only planet we know of that has life. So the more Earth-like a planet is, scientists hope, the more likely it is to be able to support life—or perhaps already be home to living things. "The idea is that this is a step on the path for looking for life in the universe," says Thomas Barclay, an astrophysicist who analyzes exoplanet-hunting data for the NASA Ames Research Center in California. He worked on the discovery of this planet, which is called Kepler-186f.

While Kepler-186f is the first exoplanet of its kind ever discovered, scientists think it won't be the last.

"We expect there to be more out there," Barclay tells Popular Science. The fact that such Earth kin have never appeared in the data before doesn't mean they're rare, he says. They're just difficult to find with today's tools. "We're pushing the boundaries of what we're doing right now. This discovery is a major milestone."

Barclay thinks future NASA projects, such as the Transiting Exoplanet Survey Satellite and the James Webb Space Telescope, will make such discoveries easier…  and more detailed. Because Kepler-186f is so far away, many things about it will have to remain unanswered, for now. For example, it's impossible to know whether it truly has liquid water on its surface. Astronomers only know there's nothing to indicate it can't have liquid water.

"We expect there to be more out there," Barclay says.

Here's what we do know. Barclay and his colleagues determined Kepler-186f is just 10 percent larger than Earth, which means it's too small to be made entirely of gas, like Jupiter. "It's probably composed of some proportion of iron, rock, ice, water, just like our own [planet]," Barclay says. "The exact ratio of those different properties isn't something we can measure."

The astronomers also figured out how much energy the planet receives from its star, which is a red dwarf. The radiation not so much that water would boil away. It could be enough to maintain liquid water, so long as Kepler-186f has an atmosphere to keep it warm, like Earth does. The data can't say whether the planet has an atmosphere, however.

Lastly, the team was able to guess at the planet's colors—which may not be really sophisticated science, but it's fun to know. The light Kepler-186f gets from its star is redder than Earth's sun's light. That means any water oceans it has would appear a duller blue than Earth's own seas. If the planet has icebergs or clouds, those will look orange.

There aren't any immediate followup studies planned for Kepler-186f. Instead, astronomers are hoping the future will reveal Earth cousins closer by, and thus easier to analyze. One great thing to find would be an Earth "twin," instead of an Earth "cousin." The twin would have to orbit a sun-like star, instead of a dwarf, like Kepler-186f does. A bigger, brighter sun would give the planet more energy than Kepler-186f's dwarf—energy that life needs.

Barclay and his colleagues published their work today in the journal Science.









Did Iapetus's Mountains Fall From Space?

$
0
0

The ridge of Iapetus
NASA/JPL
If you could hike to the equator of Saturn's moon Iapetus, you would find a strange sight: a sudden mountain range jutting out of the ground, more than 12 miles high. Images from the Cassini spacecraft show that the ridge is a narrow 12 miles in width, and extends for more than 800 miles along the middle of the moon. But where did this narrow ridge come from? Iapetus appears to lack the signs of volcanism or geologic activity that seem likely to create such peaks. 

Scientists have suggested that the mountain range did not come from forces within Iapetus--they rather fell from the sky. In a new study, published online in arXiv (but yet to be peer-reviewed), researchers created 3D images of the peaks, working with Cassini data. They found that most of the triangular-shaped peaks were near their "angle of repose," the fixed angle a material reaches as it erodes and falls toward the ground. This idea is suggestive of an "exogenic" origin (meaning, from outside the moon). "The evidence of slope angles close to the angle of repose make the case for an exogenic origin more plausible," they wrote. Presumably the peaks would have a different shape, or a wider variety of shapes, if they were created by forces within Iapetus. 

The working hypothesis is that the material that fell out of the sky, so to speak, came from an impact with some large planetary body, like the collision that likely created our moon. This material then formed a ring around Iapteus that proved to be unstable, and then fell toward it, creating the ridge we see along its equator. A collision would also help explain why Iapetus has a lopsided orbit, and may help explain why one side of it always faces away from Saturn

In case you're wondering how peaks on Iapetus compare to those on Earth or elsewhere in our planetary neighborhood, here's a helpful guide to the mountains of our solar system

[via Medium]








The Digital Cameras NASA Sent Into Space In The 90s

$
0
0

Kodak Hawkeye II Tethered Imaging Accessory
Credit: James McGarvey

In December 1975, a Kodak lab engineer created the first fully digital camera—and snapped a 100-by-100-pixel image to a cassette tape in 23 seconds.

Fast forward a couple decades and the CCD--charge-coupled device--started to emerge as the go-to technology for digital imaging. The image sensor converts light into electrical charges, thus replacing film inside traditional cameras.

To catch on the trend, folks at NASA started sending early CCD cameras up into space. In 1991, the Kodak’s Hawkeye II mounted on a Nikon F3 (developed by Kodak engineer McGarvey) went on shuttle mission STS-44 while the NASA H.E.R.C.U.L.E.S. module on a Nikon F4 (developed by NASA’s lab) went on shuttle mission STS-48, and both went up to space. They were among the earliest digital units up in space, PopPhoto reports.

Click through to PopPhoto for video footage of the cameras in operation on board the Space Shuttle.








New Test Could Diagnose Asthma With A Single Drop Of Blood

$
0
0

Neutrophil
A 3D-rendering of a neutrophil.
BruceBlaus via Wikimedia Commons
While some symptoms of asthma, like wheezing, are obvious, a diagnosis of asthma is not always clear cut, especially if they don't occur when patients are with their doctors, and involve trials of lung function and tests for allergies. But one new test could possibly diagnose asthma with a single drop of blood. 

In the study, researchers found that neutrophils, a type of white blood cell, of asthmatics move more slowly than the cells of those without asthma. The scientists have created a micro-fluidic, handheld device that can test how quickly these neutrophils migrate toward the source of inflammation; these white blood cells move toward wounds in the body, for example, and help start the healing process. But neutrophils of asthmatics, like Piggy in Lord of the Flies, are sluggish. Sucks to your ass-mar, neutros. 

Previously it was impractical to use neutrophils, as it required a fair amount of blood, according to a statement from the University of Wisconsin, from which some of the researchers hail. But the new device, which is made of cheap plastic, can detect the speed at which the white blood cells are moving, and then automatically come up with a diagnosis. "The device can sort neutrophils from a drop of whole blood within minutes, and was used in a clinical setting to characterize asthmatic and non-asthmatic patients," the researchers wrote in the study, published in Proceedings of the National Academy of Sciences.

If the device works, it could have wide application. The CDC says the number of Americans diagnosed with asthma increased by 4.3 million from 2001 to 2009, and the condition now affects more than 300 million people worldwide. 








The Week In Drones: Shooting One Down In Montana, The FBI's Robot Missions, And More

$
0
0

Drone On Patrol
Azin Haghighi, Fars News Agency

Here's a roundup of the week's top drone news, designed to capture the military, commercial, non-profit, and recreational applications of unmanned aircraft.

Iran On Patrol

Released on Wednesday by Iran's state-run Fars news service as part of a slideshow about border protection, the photo above is notable for the hexarotor drone flying with the patrol. The rest of the equipment is fairly standard for a light patrol, with troops in camouflage and a heavier gun mounted in the back of a truck, but the drone adds a contemporary touch to what could otherwise have been an image from any time in the last 30 years.

Campaign Fodder

Matt Rosendale is running for Montana's single congressional district on a strong anti-drone platform. This 30-second spot shows a drone filming him, before Rosendale knocks it out of the sky with a rifle blast. It turns out it's a bit tricker than that to shoot drones down with small arms. 

Watch his campaign ad below:

Every FBI Drone Use So Far

Thanks to a Freedom Of Information Act request by MuckRock, a collaborative transparency site staffed by journalists and researchers, there's now a publicly-available timeline of every time the FBI has used a drone within the United States. The timeline is full of redactions and censored, but the presence of the documents is enough to flesh out how the FBI uses flying robots.

In the documents there are eight drone missions, five approvals for other missions, and a proposal for drone use. This puts the potential total of FBI drone missions at 14, or four more than the FBI had previously admitted. The FBI first used a drone in late 2006, but their use of drones really took off in 2011, with the remaining 13 uses all after that point. Mission included busting a large-scale dog-fighting ring and standard drug enforcement.

It's an incomplete history that we're only just now uncovering, and shows that the FBI saw the merit of drones close to a decade ago.

Drone Law In Louisiana And Pennsylvania

Two different bills introduced in the Louisiana state legislature would restrict drone use by private citizens. The better-named bill is SB 330, the "Deterrence of Reconnaissance Over Noncriminal Entities" (DRONE). It would make private photography of individuals or others' private property a criminal offense. The other, SB 346, bans private and commercial operators from using drones to film federal facilities, transportation systems, water treatment and chemical plants, and basically anything else an environmental or public health watchdog group might want to record.

In Pennsylvania, the state senate is considering a much more modest bill. SB 1334 prohibits using "an unmanned aircraft in a manner that interferes with another person's lawful fishing or boating." Good to know that the Quaker state is protecting fish from flying robots.

New York By Robot

New York City-based landscape photographer Randy Scott Slavin used a DJI Phantom with a Go-Pro camera to capture beautiful aerial footage of the city. Watch the two-minute video below:

Did I miss any drone news? Email me at kelsey.d.atherton@gmail.com.








Here Is Apple's iOS For Your Car

$
0
0

CarPlay
Volvo

Do you own an iPhone? Have you used your iPhone? Have you driven a car? If yes, you are prepared to use CarPlay, Apple's dashboard operating system—essentially, a pared-down version of a few apps, with a heavier focus on voice control.  

We saw Volvo's version at the New York Auto Show, but it's essentially the same idea across vehicles: hook up your iPhone to your car, and your car becomes the medium for controlling your stuff. A display shows your texts, calls, maps, music, podcasts, and a handful of third-party apps, which have all been optimized for Siri-friendliness—because tapping away on your car is perhaps not the best use of your driving time. 

 

 

It's not too complicated. If you've seen a car display, imagine pasting iOS on top of that. There are some variations between cars—we got a look at the Volvo version, which will be coming to the company's new XC90—but for the most part, CarPlay is just an Apple interface that's burrowed into your car's operating system. They're integrated, although still seem discrete--you can choose, for instance, whether to use Apple's mapping tool or Volvo's. But CarPlay will only work when you plug in an up-to-date iPhone.

You can see the simplicity as a positive—you don't want to be constantly learning and configuring a new system while hurtling down the freeway at 75 MPH. If you were expecting much more than simplicity from CarPlay, you might be disappointed. 

 

 








First Human Clone Embryos Created From Adults' Skin Cells

$
0
0

image of a population of human embryonic stem cells
Human Embryonic Stem Cells—Not the Cloned Cells Described Below
This image comes from a lab unrelated to the research described below.
Clay Glennon, University of Wisconsin-Madison

Scientists have created cloned embryos from the cells of two adults. This feat is the first hard evidence that it's possible to create clones from cells taken from adult humans. The idea is that in the future, doctors could create cloned embryos of patients when the patients need an organ transplant, for example, or a set of new immune cells. The cloned embryos would serve as a source of stem cells for creating perfectly personalized transplants, no matter how old people are when they first get sick.

The clone-making scientists even gave a preliminary demonstration of this future, as The Wall Street Journal reports. The researchers used the clones, made from cells taken from the dermis layer of the skin of one 35-year-old and one 75-year-old, to generate tissues, including heart cells. The research was conducted by scientists in the U.S. and South Korea. It was funded, in part, by the Korean government. It will likely take decades of additional research to shape such tissues into something that is transplantable into people, plus studies to show such transplants are safe.

Previously, only one lab of scientists—a different one from this—had ever created human clone embryos. That lab, based at the Oregon Health and Science University, made its embryos from the cells of a fetus and of an eight-month-old infant.

The idea is that in the future, doctors could create cloned embryos of patients when the patients need an organ transplant.

Cloned embryos are just one way scientists are seeking to create personalized stem cell therapies for people. Other labs have examined making replacement organs by transforming people's skin cells into stem cells using a cocktail of genes. That technique doesn't require a stop in embryo-hood along the way, so it's less controversial among some. It's still unclear which technique will ultimately work best, although recently, there's been much more research into the non-embryonic technique.

Does the recent cloned embryo research mean scientists can now create cloned people?? Stem cell experts say that's still a long way from being possible. It's difficult to get cloned embryos to survive until birth. Nobody has ever been able to make a cloned newborn monkey, for example. Scientists have made cloned sheep and dogs.

I'm not sure that there ever will be a real danger that a rogue scientist will make a cloned human baby, as some fear. Even if science progresses that far, it would be difficult to conduct such research without anybody noticing. Cloning efforts require a lot of resources and people—entire labs of scientists, plus someone(s) to carry the embryo(s) to term. But I also don't know if maybe there is some team of very motivated, precisely trained, well-funded and evil scientists out there who would be able to pull this off. That sounds pretty unlikely to me, but anything is possible, I guess?

The cloned embryo research appears in the journal Cell Stem Cell.








Events In Your Past Determine Which Microbes Live On You

$
0
0

Trillions of microbes live in and on our body. We don’t yet fully understand how these microbial ecosystems develop or the full extent to which they influence our health. Some provide essential nutrients, while others cause disease. A new study now provides some unexpected influences on the contents of these communities, as scientists have found that life history, including level of education, can affect the sorts of microbes that flourish. They think this could help in the diagnosis and treatment of disease.

A healthy human provides a home for about 100 trillion bacteria and other microbes. These microbes are known as the microbiome, and normally they live on the body in communities, with specialised populations on different organs.

Evolution has assured that both humans and bacteria benefit from this relationship. In exchange for somewhere to live, bacteria protect their hosts from harmful pathogens. Past analysis of the gut microbiome has shown that, when this beneficial relationship breaks down, it can lead to illnesses such as Crohn’s disease, a chronic digestive disorder.

You’ve been swabbed

One of the largest research projects looking at the delicate connection between humans and their resident microbes is called the Human Microbiome Project (HMP). As part of the project, hundreds of individuals are being sampled for microbes on various parts of their bodies, with the hope that the data will reveal interesting relationships.

In the new study, published in Nature, Patrick Schloss at the University of Michigan and his colleagues set out to use data from the HMP to investigate whether events in a person’s life could influence their microbiome.

Their data came from 300 healthy individuals, with men and women equally represented, ranging in age between 18 and 40. Life history events, such as level of education, country of birth, diet, and recent use of antibiotics were among 160 data pieces were recorded. Finally, samples were swabbed from 18 places across the body to analyse their microbiome communities at two different time intervals, 12 to 18 months apart.

Lack of such knowledge means that Schloss cannot explain odd correlations, such as why women with a baccalaureate degree have specific communities in their vaginal microbiome.
Those swabs underwent genomic analysis. A select group of four bacterial communities were selected to test what proportion of each was found on different body parts. That data was then compared with life history events. Only three life history events out of about 160 tested could be associated with a specific microbial community. These were: gender, level of education, and whether or not the subject was breastfed as a child.

This complicated issue may help diagnosis and treatment of illnesses. “If a certain community of bacteria is associated with a specific life history trait,” Schloss said, “it is not such a stretch to imagine that there may be microbiome communities associated with illnesses such as cancer.”

To be sure, these associations are only correlations. Neither Schloss nor hundreds of other scientists working on microbiome data can be sure why certain communities end up on certain body parts of only certain individuals. “We really don’t have a good idea for what determines the type of community you’ll have at any given body site,” Schloss said.

Lack of such knowledge means that Schloss cannot explain odd correlations, such as why women with a baccalaureate degree have specific communities in their vaginal microbiome. Because level of education is also associated with a range of other factors such as wealth and social status – we can’t know that it is only education affecting the vaginal microbiome. Janneke Van de Wijgert at the University of Liverpool said, “I think that it is impossible to tease out the individual effects of education, sexual behaviour, vaginal hygiene behaviour, ethnicity, and social status.”

Van de Wijgert believes the data has other limitations. “The study population of a mere 300 was homogenous and healthy – young, white women and men from Houston and St Louis – which likely means that much additional microbiome variation has been missed.”

With better tools, genomic data analysis has substantially improved since the project launched in 2008. Van de Wijgert thinks that future studies need to sample a lot more individuals and look for changes at shorter time intervals.

She is hopeful that microbiome data can be used to improve medicine, make it more tailored to individual. But before manipulations of the microbiome are used to treat illnesses, she said, it should be confirmed that the offending bacteria communities cause – and are not symptom of – disease. If the bacteria causes an illness, then efforts can be made – such as a change in diet or microbial transplant – to treat disease.

The ConversationThis article was originally published on The Conversation. Read the original article.









First Success Witnessed In World's Longest-Running Experiment

$
0
0

Here comes the pitch... 

...

...

In baseball, that phrase would quickly be followed by an outcome, like strike three! But in the world's longest-running scientific experiment, waiting is the game. And so far, humans have struck out. 

In 1927, scientists at the University of Queensland in Brisbane, Australia, heated up a bunch of pitch, a derivative of tar once used for waterproofing boats. After letting it settle for three years they opened the seal at the bottom of the funnel, and the great pitch drop experiment began, a demonstration that some things that appear solid, like pitch, are really just highly viscous fluids. And flow. Very slowly. Since 1930, eight drops of pitch have fallen, and not a single one has been witnessed by a human or a camera. 

Until this week. Sort of. When it comes to the pitch drop experiment, there's a lot of waiting, and continual letdowns. Kind of like being a baseball fan. But every now and then, something happens! Yesterday, the ninth drop of pitch touched another drop of pitch in the beaker beneath the funnel. It wasn't exactly a drop, but close enough, right? Eh...

The scientists have been waiting for 13 years for this latest drop to touch the bottom, so it is a milestone in its own right. On average, drops fell once every eight years to 1988, but the eighth and ninth drops have each taken about 13 years (going into extra-innings?). Unfortunately for John Mainstone, the late professor who was the custodian of the experiment, never saw one drop in his lifetime, as explained by the University of Queensland

The former custodian of the experiment, [Mainstone], missed observing the drops fall on three occasions – by a day in 1977, by only five minutes in 1988 when it was on display at the World Expo in Brisbane, and in 2000 when a webcam that was recording it missed the crucial moment when the drop fell during a 20-minute power outage.

The experiment was subsequently put under constant surveillance, with three webcams trained on it to capture the ninth drop’s fall.

Sounds like they're really covering their bases. For the curious, you can watch the pitch drop experiment unfold yourself here. But I'll warn you--the action is a little hit or miss. 








Smart Rear-View Mirror Sees Through The Stuff Piled In Your Back Seat

$
0
0

Nissan Smart Rear-View Mirror
Corinne Iozzio

A rear-view mirror is only useful if you can see out of the back of your car -- something, it happens, that's gotten increasingly difficult to do. We pack the trunks of our SUVs and hatch-backs to the ceiling with boxes and bags, or pile kids and pets into the backseat. Sometimes even the car itself is the culprit: As rooflines in coupes and sedans slope more aggressively downward, rear windshields are being overtaken by massive blindspots.

 

 

So, Nissan's doing something about it. At the New York Auto Show this weekend, the company is demoing its Smart Rear-View Mirror system. The setup, which is still in a prototype stage, is installed on a Nissan Rogue SUV. In the car, what looks like a standard rear-view mirror has two functions: a mirror and an LCD display. When her view is blocked, a driver can toggle to a live feed from a wide-angle camera on the rear of the car. The feature will roll out in Japan this year, but U.S. availability is still pending.








Russia Ships The World's First Load of Offshore Arctic Oil

$
0
0

Russian Arctic offshore oil rig Prirazlomnoye
Oil Be There
The Prirazlomnoye offshore drilling platform, in the Pechora Sea above the Arctic circle, began extracting oil in December 2013, and loaded its first shipment in April 2014 -- about a decade off schedule. The rig is 620 miles from Murmansk and just a few dozen miles from coastal and island wildlife reserves.
Gazprom

Russia has announced its first shipment of Arctic offshore oil.  Russian President Vladimir Putin watched oil loading from the Prirazlomnoye drilling platform onto a tanker Friday via video link, according to state-run ITAR-TASS, and celebrated the shipment as the beginning of a bigger Russian presence on world energy markets.

The 70,000 metric ton load (roughly 490,000 gallons) is, as far as we know, the world's first market-sized shipment of oil extracted from the floor of any marine body above the Arctic Circle. Offshore oil extraction has only become commercially viable in recent years, as advances in petroleum technologies have combined with warming temperatures to ease, slightly, the physical and financial challenges of drilling in the harsh Arctic environment.

Greenpeace and others have charged that the potential for an oil spill is too risky in the easily damaged Arctic environment, which includes important fisheries in the Barents Sea. They also argue that untapped supplies of fossil fuels should be left underground, in favor of developing energy sources that won't create greenhouse gas pollution and further destabilize the climate.

The Prirazlomnoye field is located about 38 miles off Russia's northwestern coast, in the Pechora Sea, the southeastern section of the Barents Sea. It holds an estimated 72 million metric tons of recoverable oil. The oil company Gazprom Neft operates the field, and has partnered with Shell on its overall Arctic offshore oil development.

Russia already produces more than 10 million barrels (420 million gallons) of oil daily, but intends for Arctic offshore strikes to maintain this level of production as its Western Siberian oil fields run dry, reports Reuters.

The Prirazlomnoye platform was the site of an anti-drilling protest last September, which ended when masked Russian paratroopers boarded the Greenpeace vessel Arctic Sunrise and arrested all 30 crew and activists. The demonstrators were ultimately released without criminal prosecution thanks to a parliamentary amnesty. But Russia has not given up the ship, which remains in Murmansk.

President Putin's apparent satisfaction about this offshore Arctic oil shipment seems particularly newsworthy set against his nation's recent, retro-futuristic geopolitical relations with Ukraine, which feature the seizure of Ukraine's Crimea peninsula in March, and subsequent threats to cut off natural gas shipments to Ukraine and the rest of Europe. (Russia is the major supplier of fossil fuels to Europe, according to the European Commission.) The former Soviet republic yesterday hosted a a renewable energy conference at its embassy in Washington, D.C. according to Bloomberg News.








An Invisible Barn And Other Amazing Images From This Week

Over Meal Of Whale Meat, Japan Announces Plan To Restart "Scientific" Whaling In Antarctica

$
0
0

Harpooned whale
A whale captured by the Yushin Maru, a Japanese harpoon vessel, in February 2008.
Customs and Border Protection Service, Commonwealth of Australia
On March 31, Japan was ordered to halt its whaling program in Antarctica by a United Nations court, which ruled that the activity amounted to a commercial operation and was not for research purposes as stated. Now, less than three weeks later, Japan announced it will re-launch its whale-killing "research" operation next year, while addressing objections raised by the UN's International Court of Justice. 

The court's decision gave Japan a golden opportunity to ditch a practice that has brought international condemnation, and which doesn't appear to be that popular in Japan itself, as the country no longer consumes much whale meat. “We are revising the contents of the research to take into consideration the court’s decision to the greatest extent that we can,” the Minister of Agriculture, Yoshimasa Hayashi, told reporters. “We want to gather scientific data in order to resume commercial whaling as soon as possible.”

Japan "says its 26-year-old research program is needed to monitor recovering whale populations in the Southern Ocean, but opponents call it a crude cover for continued commercial whaling," the New York Times reported. Crude indeed. By its own admission, Japan's hunt isn't really about research--or if it is, it's about research geared toward restarting commercial whaling, which has been outlawed since 1986 (for the record, Norway and Iceland openly defy that moratorium). It's hard to believe anybody could possibly believe that Japan needs to kill scores of whales--in the past, up to 950 minke, fin and humpback whales each year in the Southern Ocean, but presumably less in the future--to keep tabs on the animal's populations. But so goes the absurd argument.

Yesterday (April 17) officials and lobbyists in Japan hosted a whale buffet to protest the UN court's decision and celebrate the harvest of the large mammals. 

[NYT]








Viewing all 20161 articles
Browse latest View live




Latest Images