Ancient sea cow fossil found in decades-old street slab in Spain
October 29, 2016, 2:32 a.m. by Bryan Nelson
Thousands of people have been walking over the fossil for decades without knowing it.
6 things to know about Earth's 6th mass extinction
September 15, 2016, 1:11 p.m. by Russell McLendon
At least five similar die-offs have happened before, but this is the first in human history — and the first with human help.
Rare aquatic cats that fish with their paws are on the brink of extinction
August 22, 2016, 6:47 p.m. by Bryan Nelson
Researchers have launched a mission to find the Javan fishing cat, the rarest cat in the world.