Discusses scientific research to determine if hurricanes were becoming more severe as a result of global warming. At that time (2008), they were unable to identify a solid connection but said it could not be ruled out. Aired Apr. 18,...

Viewers can experience what happens in a multivortex tornado. [0:35]

Climatologist Jennifer Francis talks about how climate change and severe weather may be linked.

Learn new and interesting facts about hurricanes.