In some parts of the United States, it's said that a green sky means there's a tornado on the way. But while you should ...

Add Yahoo as a preferred source to see more of our stories on Google. When many people picture a tornado, they imagine a towering funnel under a bright afternoon sky. However, some of the most ...

When many people picture a tornado, they imagine a towering funnel under a bright afternoon sky. However, some of the most dangerous tornadoes strike after dark. Nighttime tornadoes are not only ...