Meet the young patent clerk whose ideas about light, space, and time have transformed our view of the universe.
Helped by remote sensing, an expedition searches Oman's vast al-Khali desert for the lost city of Ubar.
With a radically redesigned bill, the U.S. Treasury fights back against a new breed of counterfeiters.
Flights in Russia's powerful fighter jets are for sale to foreign travelers. So is the Russian Air Force still in the game?
Sharks are known as the "perfect predators," but sometimes they slip up and attack the wrong prey—people.
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)
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 3 of 3)
Did the crash of continents that produced the Himalayan Mountains also trigger the Ice Age
Explore the science of explosions - from fireworks to building demolitions.
Underwater explorer Robert Ballard uses sonar technology to find the Britannic, a ship lost in the Aegean in World War I.
Experts take on the challenge of raising a 40-ton obelisk without using modern technology
Astronomers discover planets beyond our solar system. But is there life on them?
How do paleontologists and commercial fossil hunters know where to look for rare and priceless dinosaur bones?
Ever since World War II, physicians have struggled to find ways to treat heart failure, the biggest killer in the modern world.
The world's leading sea horse biologist journeys to Australia and the Philippines to explore the secret lives of these extraordinary fish.