“There is a moral imperative to preserve a healthy planet,” said Valerie Rockefeller Wayne, a great-great-granddaughter of oil magnate John D. Rockefeller Sr.
The White House will announce new steps to phase out a widely used coolant said to be spurring climate change.
U.N. says nature’s “cushions” against climate change are less effective as greenhouse gases increase.
As racy photos of Hollywood stars circulate online, security experts ask whether “cloud” sites are truly secure.
Scientists are observing large oxygen-depleted zones in East Coast waterways as pollution curbs falter.
California’s last reliable water source under threat as a thirsty region pumps away groundwater reserves.
The Islamists’ march evokes fears of Zarqawi’s brutal campaign to unite Sunnis under sharia law.
A planetary monitoring system meant to spot nuclear explosions helps scientists track natural disasters.
U.S. officials cite Syrian foot-dragging as deadline nears for removing chemical weapons stockpile.
While working as fundraisers and activists, gulf officials funneled money to terrorists, officials say.