How can we be safe from tornadoes

A junior professor drives his Doppler On Wheels mobile radar trucks through Moore, Oklahoma, less than 90 seconds after a tornado has torn a path of destruction through the city. Debris -- pieces of homes -- falls from the sky onto his truck. The scene is shocking; wrecks of houses covered with dirt are all that is left in the twister's path, and people are still huddled underground in shelters.
Click here to read full news..