: France was still using the guillotine for executions as late as 1977—the same year the original Star Wars was released in theaters. Bizarre Science & Nature Facts
: The Turritopsis dohrnii is a species of jellyfish that can theoretically live forever by reverting to its juvenile polyp stage after reaching maturity.
: Sharks have been on Earth for over 400 million years, meaning they are older than trees and even the North Star.
: While the Great Pyramids were being built in Egypt, woolly mammoths were still roaming the earth on Wrangel Island; they didn't go extinct until about 4,000 years ago.