Tornadoes are the most violent storms on Earth. With wind speeds up to 250 mph, they have long caused destruction and human suffering. Witness their devastation through the eyes of survivors, and discover how scientists are using new technologies to even the odds in the war against natures terrorists. SURVIVAL explores the power and damage of tornadoes. AWESOME FORCE presents a series of tornado top tens of chaos and destruction through dramatic reconstruction and awe-inspiring footage of the most fearsome tornadoes of recent times. TOUCHDOWN interviews top scientists to discuss why tornadoes occur and whether they are actually getting worse. THE CHASERS follows the pole position chasers of 1999. What do they do and why do they do it?