Curiosity NOW

After decades of wondering what became of their combat interpreter, some U.S. Navy SEALs attempt to find Nguyen Hoang Minh, who was left behind in the aftermath of the Vietnam War.

A team of maritime archaeologists descend 700 feet off the coast of North Carolina in search of the U-576, a German submarine that went down in a historic 1942 battle.

The battleship USS Arizona Memorial in Hawaii's Pearl Harbor is a scientific treasure due to the marine environment that formed around it.

Reliving the Japanese attack on Pearl Harbor Dec. 7, 1941, and the sinking of the battleship USS Arizona.

Advances in weaponry include the invention of gunpowder.

Walter Hunt invents a "magazine" for loading of semi-automatic and automatic weapons.

The destructive power of Atomic Annie, the United States' first 280mm Howitzer first tested in 1953; the history of artillery since the advent of gunpowder.

Documenting civilization's earliest forts, barricades and battlements; defensive structures dating back to ancient Assyria, Egypt and Greece.

The idea of tanks began as an extension of armory.

Tracing the history of ships since the second millennia B.C. and their uses for battle, trade, exploration, and piracy.

Tracing the history of submarines back from the time of Alexander the Great in 323 B.C. to the first military submarine in 1776.

The first fighter aircraft were flimsy contraptions made up of wood and fabric.

The German Rumpler Taube rolled off the production line in 1911 and the planes were used in combat.

History and background of fighters, bombers, helicopters, surface fleets, armed vehicles, submarines and grenades; past, present and future.

Today's attack Helicopters show the versatility of this war machine.

Countries such as North Korea, China and Pakistan continue to develop and test nuclear missiles.

Advances in weaponry include the invention of gunpowder.

Walter Hunt invents a "magazine" for loading of semi-automatic and automatic weapons.

The destructive power of Atomic Annie, the United States' first 280mm Howitzer first tested in 1953; the history of artillery since the advent of gunpowder.

Documenting civilization's earliest forts, barricades and battlements; defensive structures dating back to ancient Assyria, Egypt and Greece.

The idea of tanks began as an extension of armory.

Tracing the history of ships since the second millennia B.C. and their uses for battle, trade, exploration, and piracy.

Tracing the history of submarines back from the time of Alexander the Great in 323 B.C. to the first military submarine in 1776.

The first fighter aircraft were flimsy contraptions made up of wood and fabric.

The German Rumpler Taube rolled off the production line in 1911 and the planes were used in combat.

History and background of fighters, bombers, helicopters, surface fleets, armed vehicles, submarines and grenades; past, present and future.

Today's attack Helicopters show the versatility of this war machine.

Countries such as North Korea, China and Pakistan continue to develop and test nuclear missiles.

Advances in weaponry include the invention of gunpowder.

Walter Hunt invents a "magazine" for loading of semi-automatic and automatic weapons.

The destructive power of Atomic Annie, the United States' first 280mm Howitzer first tested in 1953; the history of artillery since the advent of gunpowder.

Keith tests the power of fuel injection in a 1965 Chevrolet Corvette, while Josh takes a spin in a 1996 Porsche 911 Turbo; RM Auctions in Arizona offers up a Ferrari 512 TR.

An elegant, short-nosed Ferrari 275 GTB hits the auction block in Arizona and hammers at an impressive number.

1949 Jaguar XK120; Oldsmobile 442.

1939 Alfa Romeo 8C 2900B; an original Cobra.

Talbot-Lago 150C SS; classic Buick; the Cobra's more refined cousin; a Harley-Davidson.

The annual Petersen Automotive Museum Garage Sale and Swap Meet.

Boss 429; Shelby GT500; Sting Ray.

Appraisal of classic muscle cars including the Plymouth Superbird and the Mustang Mach 1.

Experts appraise classic European sports cars at the Gooding and Company's auction in Scottsdale, Ariz.

Keith and Josh attend a Barrett-Jackson event in Scottsdale, Ariz., where they find a beautifully restored Chevrolet Chevelle SS LS5 and test out a Porsche 930 Turbo; Keith gets behind the wheel of a Ferrari 365 GTB/4 Daytona.

Keith Martin and Josh Nasar encounter plenty of muscle at a Barrett-Jackson collector car auction in Scottsdale, Ariz., including a Pontiac GTO Judge and a 1987 Buick GNX.

A Yenko goes up for sale in Scottsdale, Ariz.; an eye-popping Lamborghini Gallardo is found at an Auctions America event in Florida.

Keith tests the power of fuel injection in a 1965 Chevrolet Corvette, while Josh takes a spin in a 1996 Porsche 911 Turbo; RM Auctions in Arizona offers up a Ferrari 512 TR.

An elegant, short-nosed Ferrari 275 GTB hits the auction block in Arizona and hammers at an impressive number.

1949 Jaguar XK120; Oldsmobile 442.

1939 Alfa Romeo 8C 2900B; an original Cobra.