The next time your weird uncle Jim says it’s arrogant to assume lil’ ol’ people can affect something as big as the atmosphere, try using the visual described in this video. All you need is a soccer ball, newspaper, and the patience to explain it again after your science-hating cousin inevitably kicks the planet out of your hands.
[youtube http://www.youtube.com/watch?v=BybkIJysAKc]
