A startup that might have a record-breaking solar cell is in danger of going out of business.
A letter to John Stuart Mill about the limits of what may be shown or said on the Web.
SolarCity’s massive new manufacturing plant in Buffalo, New York, reflects a booming demand for solar power. Is it sustainable?
A 19th-century idea might lead to cleaner cars, larger-scale renewable energy.
Japanese researchers build a gun capable of stopping speakers in mid-sentence.
As life has evolved, its complexity has increased exponentially, just like Moore’s law. Now geneticists have extrapolated this trend backwards and found that by this measure, life is older than the Earth itself.
If the cosmos is a numerical simulation, there ought to be clues in the spectrum of high energy cosmic rays, say theorists
Even with a terrible recession and a natural-gas bonanza, the U.S. isn’t cutting emissions fast enough.
Saying that half of all the 2009 stimulus-supported clean energy companies went out of business is plain wrong.