The tornado super outbreak in April 2011 is unprecedented; over just 4 days, 360 tornadoes leave a trail of devastation as deadly weather systems build along the southern states of the USA. One of the deadliest tornadoes touches down in Alabama, and destroys two towns in 15 minutes. By 28th April, 348 people have been killed, thousands are homeless and the overall damage is in excess of 12 billion dollars.

A rock collapses inside a mine in Chile, trapping 33 miners almost half a mile under some of the hardest rock on Earth. The Chilean authorities and an international rescue team face a major challenge — they must find the men and, if they're still alive, figure out how to bring them to the surface. Never before has this type of rescue been attempted, and no one knows if it will succeed.

Montecito is hit by a devastating natural disaster that leaves its residents fighting for their lives. Overnight, the quiet California beach town is swamped by a terrifying series of debris flows that destroys homes and leaves streets swimming in mud. Through eyewitness testimony and footage taken during the disaster, we reveal how split-second decisions made the difference between life and death.