Archive: 01/9/2008

Earth: A Borderline Planet for Life?

Our planet is changing before our eyes, and as a result, many species are living on the edge. Yet Earth has been on the edge of habitability from the beginning. New work by astronomers at the Harvard-Smithsonian ...

Jan 09, 2008 4.4 / 5 (37) 15

Why it pays to be choosy

Cooperative behaviour is common in many species, including humans. Given that cooperative individuals can often be exploited, it is not immediately clear why such behaviour has evolved.

Jan 09, 2008 4 / 5 (15) 1

Solar Cells with 60% Efficiency?

Nuclear Engineer Lonnie Johnson, best known for his invention of the super soaker squirt gun, has recently designed a new type of solar energy technology that he says can achieve a conversion efficiency rate ...

Jan 09, 2008 4.6 / 5 (163) 19 weblog