"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 ...

These slow-moving, eucalyptus-eating marsupials native to Australia are beloved for their sweet demeanors and distinctly non-human adorableness. However, koalas do share one feature in common with ...

From edible violet flowers to spiders that move without muscles, get ready to have your mind blown by the weird and wonderful secrets of the universe. Whether you're a science enthusiast or just ...