Antarctic sea ice is constantly on the move as powerful winds blow it away from the coast and out toward the open ocean. A new study shows how that ice migration may be more important for the global ocean circulation than anyone realized.

A team of scientists used a computer model to synthesize millions of ocean and ice observations collected over six years near Antarctica, and estimated, for the first time, the influence of sea ice, glacier ice, precipitation and heating on ocean overturning circulation. Overturning circulation brings deep water and nutrients up to the surface, carries surface water down, and distributes heat and helps store carbon dioxide as it flows through the world's oceans, making it an important force in the global climate system. The scientists found that freshwater played the most powerful role in changing water density, which drives circulation, and that melting of wind-blown sea ice contributed 10 times more freshwater than melting of land-based glaciers did.

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Imagine a material lighter than steel, longer-lasting than lumber and strong enough to support 120-ton locomotives.

Now imagine that material is made from milk containers, coffee cups and other plastics that we recycle.

It’s called structural plastic lumber, and the ingenious, nontoxic material was invented by Thomas Nosker, an assistant research professor in the Department of Materials Science and Engineering and principal investigator in the Center for Advanced Materials via Immiscible Composite Materials at Rutgers University. The late Richard W. Renfree, Nosker’s graduate student who later became a Rutgers professor, helped invent the revolutionary material.

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One possible cause of the alarming bee mortality we are witnessing is the use of the very active systemic insecticides called neonicotinoids. A previously unknown and harmful effect of neonicotinoids has been identified by researchers at the Mainz University Medical Center and Goethe University Frankfurt. They discovered that neonicotinoids in low and field-relevant concentrations reduce the concentration of acetylcholine in the royal jelly/larval food secreted by nurse bees. This signaling molecule is relevant for the development of the honeybee larvae. At higher doses, neonicotinoids also damage the so-called microchannels of the royal jelly gland in which acetylcholine is produced. The results of this research have been recently published in the eminent scientific journal PloS ONE.

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La física tiene sus propias piedras de Rosetta. Son sistemas de cifrado, que se utilizan para traducir los regímenes aparentemente dispares del universo. Relacionan la matemática pura a cualquier rama de la física que usted pueda desear.

Está en la electricidad. Está en el magnetismo. Está en la mecánica de fluidos

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Researchers at the RIKEN Center for Sustainable Resource Science (CSRS) in Japan along with collaborators at Universiti Sains Malaysia (USM) have succeeded in decoding the genome sequence for Hevea brasiliensis, the natural rubber tree native to Brazil. Published in Scientific Reports, the study reports a draft genome sequence that covers more than 93% of expressed genes, and pinpoints regions specific to the biosynthesis of rubber.

Natural rubber flows in latex ducts and protects plants from insects when the plant becomes injured. For humans, it is an important resource for many industrial applications because it has several useful properties that have not been reproducible in synthetic petroleum-based rubber. While some strains of rubber tree yield higher amounts of rubber than others, the reasons for this are still unknown. The team led by Minami Matsui at the RIKEN CSRS and Alexander Chong at USM set out to sequence and analyze the H. brasiliensis genome. Explains first author Nyok Sean Lau, "genomic information can reveal which genes contribute to the rubber tree's capacity to produce high amounts of latex. This in turn will help us develop rubber trees with higher yields."

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Out of the 125,000 K-12 schools in the United States, over 3,700 are running on solar power. Three-thousands of these schools installed their solar power systems within the past six years, as solar technology continues to become less expensive and more sophisticated.

This trend in powering our schools reflects the growing recognition by district and state officials that photovoltaic electrical systems offer significant financial and environmental benefits. Here are four key reasons why more schools are making this transition.

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