An undersea volcano erupted near the Pacific nation of Tonga, sending tsunami waves crashing across the shore there and around the Pacific, including a surges along the U.S. West Coast.
Shirtless flag-bearer Pita Taufatofua, a Rio taekwondo competitor turned Pyeongchang cross-country skier, came in 114th on Friday. His goal was simply to finish the race (and not hit a tree).
Take five minutes of your day, watch this amazing video of the birth of a new island in Tonga, and let its story and science knock you to the floor, says astrophysicist Adam Frank.