Top 10 Times The World Almost Ended

So far, humanity has managed to avoid mass annihilation, but we've had a couple close calls in the past. WatchMojo presents the Top 10 Times Humanity Was Almost Wiped Out! But what harrowing event will take the top spot on our list? The Cuban Missile Crisis, a solor storm almost wiping out all electronic devices on the planet, or a scientific rocket almost starting world war 3? Watch to find out!