Opahs, the only warm blooded fish species, are cold-blooded killers.
Though unremarkable in size, the asteroid Vesta has an inner glow sure to catch your eye.
Dogs acquired their bark during the domestication process from wolves to man's best friend.
The pyrosome proves reality is stranger than (science) fiction: This deep-sea creature is a glowing tube made up of tiny clones called zooids.
A hybrid car pairs an electric engine for accelerating with a small, gasoline engine for coasting.
Visually impaired humans can develop the ability to navigate their surroundings using echolocation, like bats and dolphins.
New DNA tests date Neanderthal skeleton at 150,000 years old.
Archaeologists discover dinosaur feathers preserved in amber, confirming once and for all feathery dino theories.
The "Great Tit" songbird will not be upstaged; in the face of loud traffic, the bird belts it out even higher.
Wearing contact lens dramatically alters the microbiome of the eyeball.