experts say The experts analysed more than 400 different species of butterfly, and used advances in DNA to identify the differences between them at a genetic level, as well as by their appearance.

Over 15,000 feet up in the mountains of Peru, a team of scientists watched in shock as a brown butterfly flew “happily” along ...

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 ...