Archive: 08/17/2011

NASA plans to visit a near-Earth asteroid

In a few years a NASA spacecraft will seek the building blocks of life in a shovelful of asteroid dirt. The OSIRIS-REx spacecraft, targeted for launch in September 2016, will intercept asteroid 1999 RQ36, orbit it for a year, ...

Aug 17, 2011
5 / 5 (4) 0

Concerns about efforts to foster the biofuel boom

Despite growing evidence that biofuels may not be the cure-all once envisioned, many countries are still rushing headlong with biofuels development policies that experts say are having negative as well as positive impacts ...

Aug 17, 2011
4.5 / 5 (2) 2

Greenhouse gases: The measurement challenge

The continuing increase in the level of carbon dioxide and other "greenhouse gases" in the Earth's atmosphere has been identified as a cause for serious concern because it may radically accelerate changes in the Earth's climate. ...

Aug 17, 2011
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Why spiders don't drop off of their threads

It has five times the tensile strength of steel and is stronger then even the best currently available synthetic fibers: Spider thread. German scientists of the Technische Universitaet Muenchen and the Universitaet Bayreuth ...

Aug 17, 2011
4.8 / 5 (4) 3

Stock markets can regulate themselves

Whenever crisis threatens the financial markets, voices are loud in calling for greater control. It is dubious, however, whether tighter regulation would actually offer investors better protection against losing their capital. ...

Aug 17, 2011
3.5 / 5 (4) 1