PHOTO GALLERIES

Blending art, forensics and biology, Sereno's team recreates a lost world of strange Cretaceous crocs that paleontology forgot.

Each iconic 911 takes just 15 hours to build. How do they do that?!

Dr Robert Ballard embarks on a new underwater quest.

Sea Monster

The palaces, cathedrals and museums of St. Petersburg are the shining symbol of the Russian Empire’s golden age – but today...

Teams of explorers, engineers and master craftsmen are going inside Prague’s castles, crypts and hidden spaces… combining a...

Follow the stories of those families who lost their loved ones on 9/11.

Security is fierce at Russia’s most dangerous prisons.

A search for the wreck of Christopher Columbus's lost fleet in the waters of La Isabela Bay in the Dominican Republic

Titanic historian Tim Maltin conducts a series of experiments to solve the mystery of how this tragedy happened.

Cameras catch never-before-seen rock formations, lava vents, and unusual species that call the ocean-bottom home.

Check out some of these extreme war machines.

Meet the men that are risking everything to hopefully uncover the gold that lies beneath.

Captured moments from Killing Kennedy before and after that fateful day in November 1963.