6 things to know about Earth's 6th mass extinction
June 23, 2015, 3:45 p.m. by Russell McLendon
A new study reports the long-suspected mass extinction of wildlife is 'already under way.'
Watch a thunderstorm's life flash before your eyes
June 19, 2015, 4:24 p.m. by Russell McLendon
A new time-lapse video captures the rise and fall of a stationary supercell thunderstorm over South Dakota.
U.S. grants new protections for captive chimpanzees
June 12, 2015, 2:54 p.m. by Russell McLendon
The U.S. has officially reclassified all chimpanzees — both in the wild and in captivity — as an endangered species.