When Weather Changed History

Demolished by an EF5 tornado in May 2007, the town of Greensburg, Kan., undergoes an environmentally friendly rebuilding process.

Hurricane Katrina's effect on Louisiana and Mississippi exposes the need to reform emergency planning, evacuation and response for future disasters.

The weather is a critical factor in determining the success of a new superweapon designed to end World War II.

Weather plays an important role in World War II as Allied troops invade Normandy, France, in June 1944.

A severe drought in the 1930s devastates America's heartland.

The 1937 Hindenburg disaster ended the era of the giant passenger airship.

The ocean liner Titanic hits an iceberg and sinks on its maiden voyage in April 1912.

Unseasonably dry weather and strong winds turn a small fire into a conflagration that destroys a large portion of Chicago in 1871.

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A hurricane devastates the Texas coastal city of Galveston on Sept. 8, 1900.

Sled dogs and mushers race to deliver lifesaving medicine when a diphtheria epidemic threatens the Nome, Alaska, region in 1925.

The 1983 SS Marine Electric sea tragedy leads to the creation of the Coast Guard Helicopter Rescue Swimmer Program.

The most destructive flood in U.S. history changes race relations and society in the Mississippi River Valley.

A violent weather phenomenon causes the crash of Delta Air Lines Flight 191 on Aug. 2, 1985.

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British vessels and small civilian watercraft work together to rescue hundreds of thousands of Allied troops from the beaches of Dunkirk, France, beginning on May 26, 1940.

Dr. Jerri Nielsen develops breast cancer while working at a remote Antarctic research station in 1999.

A 1980 military operation to rescue American hostages in Iran ends with disastrous results.

The weather-related crash of Air Florida Flight 90 on Jan. 13, 1982, leads to changes in air-travel safety.

Nazi troops use severe winter weather as a weapon against Allied forces as the Battle of the Bulge begins in December 1944.

Unusually cold weather might have played a part in the space shuttle Challenger disaster on Jan. 28, 1986.

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No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

No episode description is available yet.

Dr. Jerri Nielsen develops breast cancer while working at a remote Antarctic research station in 1999.

Sled dogs and mushers race to deliver lifesaving medicine when a diphtheria epidemic threatens the Nome, Alaska, region in 1925.

A severe drought in the 1930s devastates America's heartland.

The 1937 Hindenburg disaster ended the era of the giant passenger airship.

Weather plays an important role in World War II as Allied troops invade Normandy, France, in June 1944.

Demolished by an EF5 tornado in May 2007, the town of Greensburg, Kan., undergoes an environmentally friendly rebuilding process.