The 2014 Presidential Green Chemistry Award winners discover new strategies for pollution prevention.
Will ocean acidification disrupt the planet's ecosystem before climate change does?
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.