Aye-ayes, a type of nocturnal lemur, have bizarrely long, bony middle fingers that they use for foraging grubs and even picking their noses—a quirky adaptation that makes them one of nature's most unusual primates.

Editor’s Note: This story highlights the fascinating (and slightly weird) ways animals evolve to survive. While aye-ayes might look creepy to some, their unique fingers are a perfect example of nature's ingenuity—plus, it’s a fun reminder that there’s still plenty of weird and wonderful stuff to discover in the animal kingdom.

Scientists have found that human teeth evolved over time to better handle the kinds of foods our ancestors ate—meaning our chompers adapted as our diets shifted from tougher, raw foods to softer, cooked meals.

Scientists using satellite data have discovered that a hidden lake beneath Greenland's ice sheet suddenly drained in 2014, causing massive flooding, fracturing the ice, and leaving behind a deep crater. The event went unnoticed at the time but highlights how satellite technology can reveal hidden changes in Earth's polar regions.