The image of millions of butterflies in a magical forest won the European Wildlife Photographer competition and here are 20 more amazing category winners.
The Helix Nebula is an example of a planetary nebula. Though it looks like a bubble or eye from Earth's point of view, the Helix is actually a trillion-mile-long tunnel of glowing gases. In its center ...
Over 15,000 feet up in the mountains of Peru, a team of scientists watched in shock as a brown butterfly flew “happily” along then landed on the snowy ground. They’d just discovered a new species with ...