June 30, 2015, 10:46 a.m. by Laura Geggel, LiveScience
The ancient worm is a distant relative of squishy worms that live in tropical forests today.
June 26, 2015, 11:38 a.m. by Stephanie Pappas, LiveScience
By identifying the worm's mouth, scientists can now fill in some evolutionary gaps for spiders.
June 19, 2015, 3:44 a.m. by Bryan Nelson
Slowing brain activity gives them better night vision and lets them stay in sync with swaying flowers.
June 16, 2015, 10:13 a.m. by Charles Q. Choi, LiveScience
Researchers studied plant fossils to determine why dinosaurs steered clear of the warm environment.
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.