Earth

Land management could help wildlife beat the challenges brought by climate change

The harmful effects of climate change on wildlife habitats can been counteracted by localised land management, a new research paper has suggested.

Scientists from the University of Exeter have suggested that habitats could be controlled through various focused practices to help 'buffer' species against the worst effects of continued climate change.

In a storage ring like BESSY II electrons circulate nearly with the speed of light passing complex magnetic structures. These magnets guide the electron beam and focus it on the ideal orbit. They are comparable to optical lenses which focus the light. To evaluate the stability of the electron trajectories in the magnetic fields, several thousands of turns need to be simulated. After each revolution the trajectories are slightly different, passing the magnets at slightly different positions.

The past century has seen a 0.8°C (1.4°F) increase in average global temperature, and according to the Intergovernmental Panel on Climate Change (IPCC), the overwhelming source of this increase has been emissions of greenhouse gases and other pollutants from human activities. Scientists have also observed that many of Earth's glaciers, ecosystems and other systems are already being impacted by rising regional temperatures and altered rainfall amounts and patterns.

The year-long HeLP-her intervention prevented a weight gain of nearly 1 kg on average among women living in rural Australia, according to trial results published this week in PLOS Medicine. The trial, conducted by Catherine Lombard of Monash University, Melbourne, Australia, and colleagues, suggests that low-intensity lifestyle programs can prevent persistent weight gain among women in similar settings.

Active in situ control of light at the nanoscale remains a challenge in modern physics and in nanophotonics in particular. A promising approach is to take advantage of the technological maturity of nanoelectromechanical systems (NEMS) and combine it with on-chip optics, but the integration of such small devices with optical fields remains difficult.

New research based on observations at American Idol auditions and in-depth interviews with 43 contestants reveals how contestants come to accept rejection after being cut from the competition.

WASHINGTON, Jan 19, 2015 -- Dark, milk, semi-sweet or white, chocolate is a favorite treat for many --many humans that is. As much as we like it, chocolate can be lethal to our canine friends. Why can we humans eat chocolate without any negative effects (besides cavities), but dogs can't? The answer has to do with a specific component of cocoa, and of course, chemistry. This week, Reactions explains the chemistry behind chocolate poisoning in dogs (and cats). Check it out here: https://youtu.be/X86co4E1NvE.

LIVERMORE, California -- Lawrence Livermore scientists, working with National Oceanic and Atmospheric Administration and university colleagues, have found that half of the global ocean heat content increase since 1865 has occurred over the past two decades.

"In recent decades the ocean has continued to warm substantially, and with time the warming signal is reaching deeper into the ocean," said LLNL scientist Peter Gleckler, lead author of a paper published in the journal Nature Climate Change.

RIVERSIDE, Calif. (http://www.ucr.edu) -- Two University of California, Riverside assistant professors of physics are among a team of researchers that have developed a new way of seeing electrons cool off in an extremely short time period.

The development could have applications in numerous places where heat management is important, including visual displays, next-generation solar cells and photodetectors for optical communications.

A new analysis of ice-core climate data, archeological evidence and ancient pollen samples strongly suggests that agriculture by humans 7,000 years ago likely slowed a natural cooling process of the global climate, playing a role in the relatively warmer climate we experience today.

A study detailing the findings is published online in a recent edition of the journal Reviews of Geophysics, published by the American Geophysical Union.

A new article shows how toy bricks, such as LEGO® blocks, are not only for children--in the hands of engineers, they can become a powerful laboratory tool for conducting sophisticated tasks.

Researchers extended the use of toy bricks in the laboratory by developing a tensile tester for stretchable and flexible electronics, which might lead to products such as foldable iPads and smartphones or integrated electronics in clothing.

Cold-blooded animals like lizards, insects and fish have a preferred body temperature range at which they hunt, eat, move quickly and reproduce. Fear that a warming climate will constrict this temperature range underlies recent studies that warn of the detrimental effects of climate change on the activity and survival of cold-blooded animals. While not contradicting these warnings, a new paper published in the latest issue of Ecology Letters offers a revised framework that may better answer how activity is affected by temperature.

Quantum physics is increasingly becoming the scientific basis for a plethora of new "quantum technologies". These new technologies promise to fundamentally change the way we communicate, as well as radically enhance the performance of sensors and of our most powerful computers. One of the open challenges for practical applications is how to make different quantum technologies talk to each other. Presently, in most cases, different quantum devices are incompatible with one another, preventing these emerging technologies from linking, or connecting, to one another.

The very first experimental observations of knots in quantum matter have just been reported in Nature Physics by scientists at Aalto University (Finland) and Amherst College (USA). The scientists created knotted solitary waves, or knot solitons, in the quantum-mechanical field describing a gas of superfluid atoms, also known as a Bose-Einstein condensate.

In a joint study, scientists from the MIPT (Moscow Institute of Physics and Technology), ICP (Institute of Chemical Physics) named after Semenov, MSU (Moscow State University) and IPCP (Institute of Problems of Chemical Physics) have developed a mechanism of laser deposition of patterns on glass with a resolution of 1000 times lower than the width of a human hair. Focusing the laser was conducted with the help of small glass spheres, playing the role of the lens.