Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The Blue Ghost ...

Researchers hope the technique could offer a more environmentally friendly approach to cleaning up messy clothing. By Jacey Fortin A crisp white shirt can be a dangerous thing. It seems to invite a ...

Add Yahoo as a preferred source to see more of our stories on Google. Fireworks are a class of explosive pyrotechnic devices that commonly come in around seven colors. Shahril KHMD/Shutterstock.com In ...