Feb 24, 2009 | 1
As if biodiversity wasn’t under siege already from encroaching human populations and climate change, it is literally under attack, according to a new study showing that most of the last half-century's conflicts were in the most ecologically rich—and threatened—parts of the planet.
One hundred eighteen of 146 of the wars fought between 1950 and 2000 occurred in biodiversity hot spots, according to the study in Conservation Biology. There are 34 of those hot spots—defined as areas with at least half of all known plant species and at least 42 percent of terrestrial vertebrates—on the globe, based on criteria established in 1988 to prioritize conservation goals.
Aug 14, 2008 | 4
Concrete and steel are the materials of choice when building buildings and vehicles that will protect soldiers from enemy fire. But a group of Norwegian researchers are testing another option: lightweight aluminum panels that can be filled with densely packed dirt, gravel, sand or any other nearby substance to provide protection without adding a lot of weight to a military's vehicles or structures, according to a recent report in the Norwegian research magazine Gemini. The aluminum panels are designed to fit together and any substance used to fill the cavity could be emptied out of the bottom of the panel before it is moved.
The Norwegian University of Science and Technology's SIMLab (Structural Impact Laboratory) also searching for a substance that can absorb the pressure exerted on the underside of a tank by a landmine explosion without adding a lot of weight to the vehicle. One proposed option is developing plates made from aluminum foam, which could absorb the impact of a bullet or piece of shrapnel and keep it from shredding the soldier on the other side of the armor. Such foam, basically a porous version of aluminum, is being developed by a number of companies, including Alcoa, Inc. in Alcoa Center, Pa., and Toronto's Cymat Technologies Ltd. and would be nonflammable and recyclable.
Deadline: Dec 11 2013
Reward: $52,000 USD
Platform technologies – tools, techniques, and instruments that enable entirely novel approaches for scientific investigation across a b
Deadline: Jan 27 2014
Reward: $15,000 USD
The Dow Chemical Company is the leading producer of polyalkylene glycols (PAGs) used in synthetic fluids and lubricants where petroleum,
Give a 1 year subscription as low as $14.99X