THE MUST reads
This is the first time dinosaur brain tissue has been identified and it offers an unprecedented look into the life of a gigantic 133-million-year-old dinosaur.
Sleek birds called common swifts are uncommonly good flyers, and have just broken the world's record for time spent each year in flight.
Conservation groups paint a grim picture of the road ahead for a wide variety of vertebrates.
Indiana bats gain a new safe place in Hannibal, Mo.
A caveman's lair 16,000 years ago included the pelt of a cave lion, an animal that we likely drove to extinction.