Mysterious frozen lakes filled with bones, mummified bodies hanging from inside a glacier, and a 30,000-year-old virus frozen in ice brought back to life in a laboratory. In an all new ...

Inside an underwater habitat called Shark House, extreme diver and shark behaviorist Dickie Chivell searches for great whites on the sea floor.

Discover extraordinary secrets behind uncharted jungles across the globe.

Uncovers the extraordinary worlds lying just below modern urban centers. Beneath the streets of stone, soil and concrete exist hidden realms shaped by survival, ritual and imagination. Uncovers the extraordinary worlds that exist beneath major urban centers, from the tombs and wartime shelters of Naples to the manmade Royston Cave in Hertfordshire, England.

Extreme weather conditions and disasters have marked and shaped the Earth's surface. These events can cause horrific destruction, but they can also reveal incredible things.

Across North America and the rest of the world, hurricanes, storm surges, earthquakes and sea level rise, threaten our major cities and lead to natural catastrophes.

In Secrets in the Sand, experts uncover four global stories of "extraordinary curiosities that were once concealed in the deserts of the planet."