Unique microscopic structures make the feathers so black they look like a hole in space around the colored patches.
A 108-year-old museum specimen helps answer evolutionary questions about the extinct marsupial carnivore.
When it comes to raising golden-headed lion tamarin babies, everyone cooperates -- especially the grown males.
Robotic bugs may someday help in search and rescue.
Mouse-sized mammal had gliding membranes and a unique inner ear.
Genetic study suggests America’s native white-footed mice are adapting their metabolism to conquer the Big Apple.