Earth

This week from AGU: Measuring Antarctic ice loss, Indian Ocean program, Oregon landslides

WASHINGTON D.C., Sept. 30, 2014 – Ice is ubiquitous in nature—found within terrestrial and astrophysical environments alike—and contains many atoms and molecules trapped inside it. For example, ice beneath the world's oceans hosts a vast reservoir of greenhouse gases, which if released would have a profound effect on climate change.

Researchers from the University of Southern Denmark have synthesized crystalline materials that can bind and store oxygen in high concentrations. Just one spoon of the substance is enough to absorb all the oxygen in a room. The stored oxygen can be released again when and where it is needed.

The natural photo degradation of diazepam (valium) and similar medicines – followed by bacterial breakdown – may reduce their potentially harmful impact on the UK's freshwater environment, a team of researchers has said.

Quantum entanglement refers to the "pairing" of two subatomic particles in such a way that they form a whole quantum system. Interest in entanglement is increasing today, as it challenges the foundations of quantum mechanics itself, and is also key for achieving quantum information processing and communication. Entanglement is thought to exist up to the everyday, or "macroscopic" realm – according to the predictions of quantum physics – but experimental proposals to show this often involve conditions that are difficult to achieve in today's labs.

The greens and blues of the ocean color from NASA satellite data have provided new insights into how climate and ecosystem processes affect the growth cycles of phytoplankton—microscopic aquatic plants important for fish populations and Earth's carbon cycle.

So long, solitons: University of Chicago physicists have shown that a group of scientists were incorrect when they concluded that a mysterious effect found in superfluids indicated the presence of solitons—exotic, solitary waves. Instead, they explain, the result was due to more pedestrian, whirlpool-like structures in the fluid. They published their explanation in the Sept. 19 issue of Physical Review Letters.

Three-dimensional metal printing technology is an expanding field that has enormous potential applications in areas ranging from supporting structures, functional electronics to medical devices. Conventional 3D metal printing is generally restricted to metals with a high melting point, and the process is rather time consuming.

Scientists across China and the United States collaborating on the PandaX search for dark matter from an underground lab in southwestern China report results from the first stage of the experiment in a new study published in the Beijing-based journal SCIENCE CHINA Physics, Mechanics & Astronomy.

The conversion of forests, grasslands, shrublands and wetlands to cropland over the course of three centuries profoundly changed the surface of the Earth and the carbon cycle of the terrestrial ecosystem in Northeast China.

Washington, DC – Monday, September 29: Between 1970 and 2010 populations of mammals, birds, reptiles, amphibians, and fish around the globe dropped 52 percent, says the 2014 Living Planet Report released today by World Wildlife Fund (WWF). This biodiversity loss occurs disproportionately in low-income countries—and correlates with the increasing resource use of high-income countries.

A University of Texas at Arlington research team says recently identified radiation detection properties of a light-emitting nanostructure built in their lab could open doors for homeland security and medical advances.

MADISON, Wis. — Mountain pine beetles get a bad rap, and understandably so. The grain-of-rice-sized insects are responsible for killing pine trees over tens of millions of acres in the Western U.S. and Canada over the last decade.

But contrary to popular belief, these pests may not be to blame for more severe wildfires like those that have recently swept through the region. Instead, weather and topography play a greater role in the ecological severity of fires than these bark-boring beetles.

The atmospheric conditions associated with the unprecedented drought in California are very likely linked to human-caused climate change, researchers report.

Climate scientist Noah Diffenbaugh of Stanford University and colleagues used a novel combination of computer simulations and statistical techniques to show that a persistent region of high atmospheric pressure over the Pacific Ocean--one that diverted storms away from California--was much more likely to form in the presence of modern greenhouse gas concentrations.

Boulder, Colo., USA – For decades, planetary geologists have speculated that glaciers might once have crept through Valles Marineris, the 2000-mile-long chasm that constitutes the Grand Canyon of Mars. Using satellite images, researchers have identified features that might have been carved by past glaciers as they flowed through the canyons; however, these observations have remained highly controversial and contested.