As the largest single chunk of melting snow and ice in the world, the massive ice sheet that covers about 80% of Greenland is recognized as the biggest potential contributor to rising sea levels due to glacial meltwater. Until now, however, scientists’ attention has mostly focused on the ice sheet’s aquamarine lakes and on monster chunks of ice that slide into the ocean to become icebergs.
For swimming through sand, a slick and slender snake can perform better than a short and stubby lizard. That’s one conclusion from a study of the movement patterns of the shovel-nosed snake, a native of the Mojave Desert of the southwest U.S.
A team of chemistry and materials science experts from Univ. of California, Santa Barbara and The Dow Chemical Company has created a novel way to overcome one of the major hurdles preventing the widespread use of controlled radical polymerization.
The work, published in Nature Communications, demonstrates that the new material presents efficient and degradation-resistant laser emission in the blue, a spectral region of interest in applications such as spectroscopy or materials processing, among others.
The immune system is a complex network of many different cells working together to defend against invaders. Successfully fighting off an infection depends on the interactions between these cells. A new device developed by Massachusetts Institute of Technology engineers offers a much more detailed picture of that cellular communication.
Narrow strips of graphene called nanoribbons exhibit extraordinary properties that make them important candidates for future nanoelectronic technologies. A barrier to exploiting them, however, is the difficulty of controlling their shape at the atomic scale, a prerequisite for many possible applications.
New research has identified one of the key cancer-fighting mechanisms for sulforaphane, and suggests that this phytochemical may be able to move beyond cancer prevention and toward therapeutic use for advanced prostate cancer. Scientists said that pharmacologic doses in the form of supplements would be needed for actual therapies, beyond the amount of sulforaphane that would ordinarily be obtained from dietary sources such as broccoli.
A new type of nanowire crystals that fuses semiconducting and metallic materials on the atomic scale could lay the foundation for future semiconducting electronics. Researchers at the Univ. of Copenhagen are behind the breakthrough, which has great potential. The development and quality of extremely small electronic circuits are critical to how and how well future computers and other electronic devices will function.
An ultra-thin nanomaterial is at the heart of a major breakthrough by Univ. of Waterloo scientists who are in a global race to invent a cheaper, lighter and more powerful rechargeable battery for electric vehicles. Their discovery of a material that maintains a rechargable sulphur cathode helps to overcome a primary hurdle to building a lithium-sulphur battery.
A new study from Lund Univ. in Sweden indicates inherited viruses that are millions of years old play an important role in building up the complex networks that characterize the human brain. Researchers have long been aware endogenous retroviruses constitute around 5% of our DNA. For many years, they were considered junk DNA of no real use, a side effect of our evolutionary journey.
General Motors plans to start selling an affordable electric car in 2017 that will be able to go 200 miles on a single charge. A person briefed on the matter told The Associated Press that GM plans to start selling a $30,000 battery powered family car called the Chevrolet Bolt sometime in 2017.
Chemists have made a significant advancement to directly functionalize C-H bonds in natural products by selectively installing new carbon-carbon bonds into highly complex alkaloids and nitrogen-containing drug molecules. C-H functionalization is a much more streamlined process than traditional organic chemistry, holding the potential to greatly reduce the time and number of steps needed to create derivatives of natural products.
Forget about it. Your brain is a memory powerhouse, constantly recording experiences in long-term memory. Those memories help you find your way through the world: Who works the counter each morning at your favorite coffee shop? How do you turn on the headlights of your car? What color is your best friend's house?
Plans for the construction of the world's largest digital camera at the SLAC National Accelerator Laboratory have reached a major milestone. The 3,200-megapixel centerpiece of the Large Synoptic Survey Telescope, which will provide unprecedented details of the universe and help address some of its biggest mysteries, has received key "Critical Decision 2" approval from the DOE.
The “warming hiatus” over the past 15 years has been caused in part by small volcanic eruptions. Scientists have known volcanoes cool the atmosphere because of the sulfur dioxide that is expelled during eruptions. Droplets of sulfuric acid that form when the gas combines with oxygen in the upper atmosphere can persist for many months, reflecting sunlight away from Earth and lowering temperatures at the surface and in the lower atmosphere.
Washington State Univ. Spokane scientists have found a brain protein that boosts the healing power of sleep and speeds an animal's recovery from the flu. The research has determined that a brain-specific protein is uniquely involved in sleep responses triggered by the influenza virus in mice. Without the protein, animals develop more severe symptoms of infection and die at higher rates than regular or control mice.
If you sweep a laser pointer across the moon fast enough, you can create spots that actually move faster than light. Anyone can do it. At a meeting of the American Astronomical Society in Seattle, Wash., Robert Nemiroff, a physics professor at Michigan Technological Univ., reported that this theoretical curiosity may turn out to be practically useful out in the cosmos.
For household robots ever to be practical, they’ll need to be able to recognize the objects they’re supposed to manipulate. But while object recognition is a highly studied topic in artificial intelligence, even the best object detectors still fail much of the time. Researchers at MIT believe that household robots should take advantage of their mobility and their relatively static environments to make object recognition easier.
Scientists who have reported that the Great Lakes are awash in tiny bits of plastic are raising new alarms about a little-noticed form of the debris turning up in sampling nets: synthetic fibers from garments, cleaning cloths and other consumer products. They are known as "microfibers", exceedingly fine filaments made of petroleum-based materials such as polyester and nylon that are woven together into fabrics.
Smartwatches don't have to look ugly to be functional. Clothing and accessories designers are collaborating with engineers to produce computerized wristwatches that people will want to wear all day and night. With Apple Inc. preparing to release a watch line that includes an 18-karat gold edition, rivals know they need to think beyond devices that look like miniature computers.
If you’re sitting in a coffee shop, tapping away on your laptop, feeling safe from hackers because you didn’t connect to the shop’s Wi-Fi, think again. The bad guys may be able to see what you’re doing just by analyzing the low-power electronic signals your laptop emits even when it’s not connected to the Internet. And smartphones may be even more vulnerable to such spying.
It’s not just the football players who have spent a year training. Univ. of Washington seismologists will again be monitoring the ground-shaking cheers of Seahawks fans, this year with a bigger team, better technology and faster response times. Scientists with the Pacific Northwest Seismic Network will install instruments this Thursday to provide real-time monitoring of the stadium’s movement during the 2015 NFL playoffs.
By analyzing the light of hundreds of thousands of celestial objects, Johns Hopkins Univ. astronomers from the Sloan Digital Sky Survey (SDSS) have created a unique map of enigmatic molecules in our galaxy that are responsible for puzzling features in the light from stars. The map was unveiled Jan. 8 at the 225th meeting of the American Astronomical Society in Seattle.
First responders have downloaded more than 10,000 copies of a guide to commercially available, hand-portable biodetection technologies created to help them determine what they might be up against in the field. Since many first responders do not always have immediate access to a computer, a mobile version of the guide is now available for cell phones and tablets.
Outside his career as a noted nanochemist, Lawrence Berkeley National Laboratory (Berkeley Lab) director Paul Alivisatos is an avid photographer. To show off his photos, his preferred device is a Kindle Fire HDX tablet because “the color display is a whole lot better than other tablets,” he says.