The study from Harvard and Syracuse University calculates the decline in heart attacks and lung disease when soot and smog are reduced.
We have entered a new geological era, in which human action is changing the physical world around us.
As California struggles to meet new water use restrictions, the governor is urging a sharp increase in fines for the worst violators.
It was a picture perfect Sunday for a peaceful march against the most violent instruments of war: nuclear weapons.
Scientists have linked a swarm of small earthquakes west of Fort Worth, Texas, to nearby natural gas wells and wastewater injection.
"California water policy, water management, and infrastructure need to be changed: those systems were built in an old climate and the reality is, we're in a new climate."
On this day in 2010, a BP oil rig exploded in the Gulf of Mexico, resulting in the largest offshore oil spill in U.S. history.
"It's all well and good that the wealthy are having their lawns painted green, but that's not a solution."
"At the heart of this campaign is consumer rights. People deserve to know what they are eating and feeding their children."
Ward Valley, Calif., was decided upon in 1988 as the preferred location for a nuclear waste dump to be operated by U.S. Ecology.