Mysterious glowing jellyfish discovered near Mariana Trench

Hollywood chimp retires to Florida after 16 years in captivity

Ever wonder how European starlings came to the U.S.? Blame Shakespeare

Key and Peele's shelter cat promo for 'Keanu' is brilliant

Shinda the gorilla surprises with 'miracle' baby

5 facts about the incredible (and huge) Atlas moth

Sheepdog runs home — a 240-mile, 12-day trek!

Gray whales swim through kelp in this zen-inducing video

11 amazing antics of ants

Can you guess where these penguin species live?

15 things you didn't know about manatees

Fossils of North America's first known monkey species found