Astronauts report that space has sort of a "hot metal" smell, similar to seared steak. The world's largest swimming pool is in Algarrobo, Chile and measures over 1,000 yards from end to end. That's 10 football fields! The Greek philosopher Diogenes the Cynic was the original Oscar the Grouch: he chose to be homeless and slept in a large ceramic jar near the marketplace. The cost of raising a child from birth to age 18 is around $233,610. St. Elmo's fire, the phenomenon in which a pointed object has a violet or blue glow thanks to electricity in the air, is actually a form of plasma. When animals sleep through a cold period it's called hibernation, but when animals sleep through a hot period it's called estivation.