How Do We Know: Tracking Tornadoes

  • Published: April 18th, 2011

How do we know when a tornado is forming? Scientist Harold Brooks explains how Doppler radars are used to track storm formation.

How Do We Know: Drought

  • Published: September 28th, 2010

How do we know when a region may be experiencing an early drought? Dr. Heidi Cullen talks to NASA scientist Molly Brown, who relies on sophisticated satellites for the answer.

Detecting Tornadoes

  • Published: May 12th, 2010

Doppler radar is a powerful tool for scientists to spot the formation and path of tornadoes.