Birds had to relearn flight after meteor that wiped out dinosaurs

Fossil records suggest only flightless birds survived when T rex was wiped off the EarthBirds had to rediscover flight after the meteor strike that killed off the dinosaurs, scientists say.The cataclysm 66m years ago not only wiped out Tyrannosaurus rex and ground-dwelling dinosaur species, but also flying birds, a detailed survey of the fossil record suggests. Continue reading...