The impact that killed the dinosaurs also caused mass deforestation and sent the first tree-dwelling birds to extinction.
New insights could improve cochlear and retinal implants.
A genetic variant linked to cold sensation and migraine headaches may have helped people survive in northern climates.
New genetic analysis suggests that major groups of fish species arose in the 10 million years after dinosaurs disappeared.
Parasitoid wasps that lay eggs in other creatures may represent more species than any other group of animals.
A 108-year-old museum specimen helps answer evolutionary questions about the extinct marsupial carnivore.