Story

Vietnam; the U.S.-Soviet arms race; terrorism and rogue states; Desert Storm.

Tracing the roots of the Green Berets, who were chosen based on intelligence, physical strength and the ability to speak foreign languages.

Historical account of the Navy SEALs, including how they existed before President Kennedy commissioned them in 1962.

Scientists analyze the impact of a potential 10.0 megaquake striking various fault lines in the U.S., underwater and around the world.

A scenario in which Chicago is hit by three fictional tornadoes.

The impact of a major earthquake/tsunami would have on the West Coast of the United States.

The supervolcano Toba erupts on Sumatra 75,000 years ago, causing a sudden volcanic winter that shocks the climatic balance around the world.

The eruption of the Krakatoa volcano in 1883 was one of the deadliest natural disasters in recorded history.

Historians imagine how an event similar to the 1868 eruption of the Mauna Loa volcano, which triggered two major earthquakes, would impact Hawaii today.

A flaming tornado jeopardizes firefighters; Hawaiian volcano wipes an island off the map; an avalanche obliterates a village in Honduras.

Scientists analyze the impact of a potential 10.0 megaquake striking various fault lines in the U.S., underwater and around the world.

A scenario in which Chicago is hit by three fictional tornadoes.

The impact of a major earthquake/tsunami would have on the West Coast of the United States.

The supervolcano Toba erupts on Sumatra 75,000 years ago, causing a sudden volcanic winter that shocks the climatic balance around the world.

The eruption of the Krakatoa volcano in 1883 was one of the deadliest natural disasters in recorded history.

Historians imagine how an event similar to the 1868 eruption of the Mauna Loa volcano, which triggered two major earthquakes, would impact Hawaii today.

A flaming tornado jeopardizes firefighters; Hawaiian volcano wipes an island off the map; an avalanche obliterates a village in Honduras.

Scientists analyze the impact of a potential 10.0 megaquake striking various fault lines in the U.S., underwater and around the world.