Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about ...

Discover 15 unbelievable transparent animals that actually exist on Earth. See nature's most ghostly and rare creatures.

Oxygen has been the most important gas in our search for life among the cosmos thus far. On Earth, we have it in abundance ...

This remarkable place has a remarkable amount of rainfall. And as a result, the forests around it are hugely biodiverse. Meet ...

Astronomers have spotted a planet orbiting a star in our neighborhood of the Milky Way galaxy that presents a unique ...

The platypus is one of nature’s strangest mammals. This egg-laying animal sweats milk, hunts by sensing electrical signals, ...

Those bizarre sea creatures that light up like carnival rides are actually ctenophores, which have an ancient brainlike ...

The fastest creature in the world isn’t a cheetah or a falcon: it’s a single-celled organism known as Spirostomum ambiguum, ...

Scientists have uncovered surprising complexity in a tiny sensory structure found in comb jellies, some of the oldest animals on Earth.

Scientists discovered a bizarre 275-million-year-old aquatic animal with sideways teeth and a twisted jaw in Brazil, ...

Researchers found dozens of tiny, see-through crustaceans in an Australian cave, including a new “giant” species measuring nearly 6mm (not pictured). JURE MAKOVEC AFP via Getty Images When researchers ...