Platypus swims in murky water; its distinctive flat bill and webbed feet are visible as it glides smoothly.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Stay sharp and learn something new every day or stock up on knowledge for the next 105 days with these ...

Talk about a bizarre feature of the human body: If you happened to swallow a razor blade, your stomach acid would dissolve it ...

Discover 20 fun facts that sound completely made up but are true, covering history, science, nature, and surprising ...