The world's leading sea horse biologist journeys to Australia and the Philippines to explore the secret lives of these extraordinary fish.

Ever since World War II, physicians have struggled to find ways to treat heart failure, the biggest killer in the modern world.

How do paleontologists and commercial fossil hunters know where to look for rare and priceless dinosaur bones?

Astronomers discover planets beyond our solar system. But is there life on them?

Experts take on the challenge of raising a 40-ton obelisk without using modern technology

Underwater explorer Robert Ballard uses sonar technology to find the Britannic, a ship lost in the Aegean in World War I.

Explore the science of explosions - from fireworks to building demolitions.

Did the crash of continents that produced the Himalayan Mountains also trigger the Ice Age

In this three part series, Lennart Nilsson's extraordinary microphotography reveals a world we've never seen—within and on ourselves. (Part 3 of 3)

In this three part series, Lennart Nilsson's extraordinary microphotography reveals a world we've never seen—within and on ourselves. (Part 2 of 3)

In this three part series, Lennart Nilsson's extraordinary microphotography reveals a world we've never seen—within and on ourselves. (Part 1 of 3)

Sharks are known as the "perfect predators," but sometimes they slip up and attack the wrong prey—people.

Flights in Russia's powerful fighter jets are for sale to foreign travelers. So is the Russian Air Force still in the game?

With a radically redesigned bill, the U.S. Treasury fights back against a new breed of counterfeiters.

Helped by remote sensing, an expedition searches Oman's vast al-Khali desert for the lost city of Ubar.

Meet the young patent clerk whose ideas about light, space, and time have transformed our view of the universe.