A sweeping health care overhaul narrowly clears its first hurdle in the Senate, with Democrats casting 60 party-line votes to open debate.

A record number of Afghan war deaths in October has forced the U.S. to take new notice of Afghanistan as debate rages over whether President Obama should send tens of thousands more troops.

After decades of denials from the owners of a Nevada mine, dangerous levels of uranium and arsenic in drinking water have been tied to a World War II-era copper mine.

Asian carp may have breached an electronic barrier designed to prevent the giant invaders from upsetting the ecosystem in the Great Lakes and jeopardizing a $7 billion sport fishery.

Marines treated for post-traumatic stress had to undergo therapy for months in temporary trailers where they could hear live-fire training, according to servicemen and their former psychiatrist.