Our planet: 49 Earth Days later. Yesterday was Earth Day and, courtesy of this cool video from the American Museum of Natural History, you can see how the planet and its inhabitants have changed since the first Earth Day in 1970 (watch, runtime 3:19). Some of our favorite facts: In almost 50 years, the population of Earth has doubled, one person in every 10 is hungry but three in 10 are obese or overweight, and high- and middle-income countries throw away five times more food than low-income countries.
Our planet: 49 Earth Days later