News tagged with renewable source

Making mirrors for the sun

With $1.5 million from the Department of Energy, University of Arizona researchers are continuing to improve groundbreaking technology to produce solar electricity at a price competitive with non-renewable ...

Jul 06, 2012 3 / 5 (4) 1

More people, more environmental stress

Although it's long been suspected that human activity has greatly contributed to environmental stress, it's only recently that science has begun to show just how great a role that activity is playing.

Jun 11, 2012 5 / 5 (2) 0 | with audio podcast