This is the bottom of the ocean volatile as any sea. Above the earth's surface, currents ebb and flow. Some spiral into whirlwinds. The dust devil has more bluster than bite. Other twisters are downright deadly. Tornado on the ground on highway 44! Damage everywhere. We've got numerous people injured! Get away from the windows! Tree just blew over! Get away from the windows! Get away! Get away! Tornadoes pack the fastest winds on earth. But in magnitude, this spinning giant goes unmatched. Hurricane, typhoon, cyclone all equally fearsome. By any name, the greatest storms on earth. Severe tropical storms afflict every continent except Antarctica. In this century, they have claimed over half a million lives. Tornadoes have killed over 10,000 in the United States alone. Today, electronic eyes pierce the atmosphere, and map its shifting winds. Scientists chart the anatomy of a storm.