Indiana Attorney General Curtis Hill plans to appeal a judge's order permanently blocking a ban on abortions sought due to fetal genetic abnormalities and a requirement that aborted fetuses be buried or cremated

It may not be surprising that an "aquatic desert" turtle faces long odds in life, but environmentalists and biologists still welcomed this week's endangered species designation for the Sonoyta mud turtle

Texas billionaire Edward P. Bass is giving $30 million to the University of Arizona to support the Biosphere 2 research facility

The endangered California condor is making a slow but steady comeback in the wild three decades after the giant bird went nearly extinct

Gene tests may help gauge who will benefit from cancer immune system treatments

Pope Francis has overhauled the Vatican institute most closely associated with the conservative sexual morals promoted by St. John Paul II, saying it was necessary to adapt and expand its mission to address the reality of today's Catholics

Correction: Tracking Sea Turtles story

Sea lice in salmon poses no danger to human diners, but the fish and the farms that raise them are a different story

The mass of warm water known as "the blob" that heated up the North Pacific Ocean has dissipated, but scientists are still seeing the domino-effect it is having on Northwest salmon and steelhead