Water-smart urban design and drought in the American West.
It's not just falling oil prices but any price volatility that makes conservation a harder sell.
For the first time in 35 years, atmospheric ozone actually increased, according to NASA measurements.
The next generation of solar power might be waiting beneath the Pacific waves, in the form of an armchair-sized clam.
What’s the single biggest action a person can take to reduce their personal impact on climate change? It would seem that the answer is to eat less beef.
Environmental engineer and newly-minted MacArthur Fellow Tami Bond is an expert on "black carbon."