Billions of periodical cicadas emerge every 13 or 17 years in the eastern United States, creating an all-you-can-eat buffet for birds. Chip Somodevilla / Getty Images When huge broods of cicadas ...

Oviraptorosaurs are a group of birdlike dinosaurs that were part of the ancestral dinosaur lineage that later gave rise to birds. Oviraptorosaurs walked on two legs, had a powerful toothless beak and ...