The globe learned on Dec. 26, that tsunamis can bring death and devastation to the world's coastlines.

This groundbreaking one-hour event takes you into the whirling devastation of a tornado's heart as cutting-edge science meets over-the-edge filmmaking to capture incredible images of what happens inside one of nature's deadliest phenomena! Witness the construction and first deployment of the revolutionary Tornado Intercept Vehicle - 8,000 pounds of -inch armor plating, bullet-proof windows, state-of-the-art camera, and a crew of hardcore, thrill-seeking filmmakers.

National Geographic takes you and your family on a truly fascinating journey through the wondrous inner world of The Incredible Human Machine. Explore the fascinating, microscopic universe that exists within us all.

Power lines down, amazingly high speed winds, and deadly cold temperatures raged through the eastern United States with one violent bang. Storm of the Century presents an up close and personal look into the terrifying effects of these acts of nature.

Sparkling diamonds. Exquisite emeralds. Brilliant rubies. Shimmering pearls. For centuries, these precious gems have captured humankind, leading men and women to give up fortunes - even their lives - to posses them. Join National Geographic on a journey around the globe to discover the origins of these most coveted gems. You'll see astonishing amounts of earth mined to uncover rubies in Thailand or emeralds in Columbia. You'll meet a Tennessee businessman who cultivates freshwater pearls and a California chemist who 'grows' rubies nearly identical to nature's stunning creations. And you'll witness rarely, if ever before, filmed sales of uncut diamonds - deals worth thousands of dollars sealed only with a handshake and a Hebrew phrase. Unlock a treasure chest filled with a wealth of information and the dazzling beauty of Splendid Stones.

Obsessed with its beauty, humbled by it flaws, humans are covered by a unique ultra-thin shield that instantly defines and shapes the body living inside it. Now, National Geographic invites you on an in-depth adventure revealing not just the science but the vital cultural meanings we attach to this largest of all human organs.

For thousands of years, people have struggled to survive the devastating power of savage natural calamities. Now, witness spectacular scenes of cataclysmic destruction - and inspiring human courage - captured by the acclaimed filmmakers of National Geographic.

Cutting-edge medical technology and riveting, life-or-death personal dramas combine in this unprecedented, from-the-inside-out exploration of The Incredible Human Body. Marvel at the revolutionary imaging system used to guide a surgeon's scalpel in a delicate brain-tumor operation.

Explore the miraculous potential and frightening possibilities of genetic cloning as National Geographic's cameras reveal the history, controversy, and cuttingedge developments of a scientific breakthrough capable of literally changing the destiny of the human race. Witness the remarkable effects of the cloning revolution and explore the "brave new world" of the human cloning industry and its inherent controversy.

This fierce force of nature can snap trees as if they were twigs, reduce houses to rubble, and kill anyone unlucky enough to stand in the way. Hear terrifying stories of being buried alive.

Every year, millions of asteroids and comets or "stray bullets" streak through the skies, and tons of small meteorites strike our planet! Some 65 million years ago, dinosaurs were wiped off the face of the earth, in what many believe was the aftermath of a massive cosmic collision.