Birth of rare Sumatran rhino hailed as major boost

The rare birth of a Sumatran rhino in Indonesia has been hailed a victory for the critically endangered species, which has been almost wiped out in the wild by poaching and habitat destruction.

Experts: Mexico's Vaquita porpoise headed toward extinction

The population of Mexico's endangered vaquita marina, the world's smallest porpoise, has fallen to alarmingly low levels and is heading toward extinction soon if drastic measures aren't taken, scientists warned Friday.

Study finds toxic metals in Los Angeles homes near gas leak

Homes located near a gas well blowout that spewed the nation's largest-known release of methane had higher levels of toxic metals that could have caused symptoms Los Angeles residents have suffered from for months, public ...