EPA is running out of time to craft carbon-emissions standards for industrial polluters beyond power plants.
It's a 7,000-foot volcano collapsed into a 6-mile caldera—and you've probably never heard of it.
The regulatory impact of Japan's Fukushima crisis extends far past the island nation's shores, says a U.S. report issued on the disaster's third anniversary.
A senior U.N. disarmament official says Syria likely will meet a mid-April timeline for surrendering all its chemical arms, barring any surprises.
Unwilling to wait for a gridlocked Congress, the president added new protections to a stretch of Northern California coastline.
The former Arkansas governor is trying to bring chivalry back.
The Louisiana Democrat steered clear of her colleagues' climate event, but Republicans are bashing her anyway.
After the administration spied on Americans and lied to Congress, Feinstein's bombshell now raises even more questions about its activities.
The Senate Intelligence Committee leader accused the CIA of interfering with its investigation into the agency's old interrogation programs.
The president appeared on the comedian's Web series to plug the Affordable Care Act.