Brian Breger

The North American bullfrog is a voracious carnivore with a seemingly insatiable appetite. It devours virtually anything in its path. In times of need, it will even eat its own kind. These frogs were introduced to the western United States in the early 1900s. Today, with few natural enemies, they are devastating the local ecosystem. Thus began the hunt for the bullfrog.

National Geographic follows underwater explorer Bob Ballard as he searches for the aircraft carrier sunk during the Battle of Midway.

In the abyss of the ocean lies a world of mysteries and sunken treasures. But the laws governing the seas are not enough to end the debate over the right to claim possession of these Roman ships, Spanish galleons, and centuries-old luxury ropemakers. Follow Dr. Robert Ballard and his team of specialists as they embark on a remarkable underwater expedition in the Mediterranean Sea to discover and study ancient shipwrecks.

National Geographic goes to Egypt to look into an underground vault that houses a ship of the Pharaoh Khufu and follows an researcher as he attempts to recreate the ancient rite of mummification.

Around 6,000 elephants, one third of all Asian elephants roaming the planet, live in the forests of Burma. The film follows the trials of one particular herd of wild elephant struggling to survive in the shrinking forests of Burma, and the deep and tangled history their kind has shared with man.

It's one of the ocean's most extraordinary and mysterious creatures. It's often seen, but very little is known about it: it's the bluefin tuna. It's faster than a dolphin and its hunting prowess rivals that of a great white shark. Traveling at over fifty miles per hour, it crosses the oceans. However, very little is known about its movements and life history; it's a creature so evolved that it escapes human observation. National Geographic guides us on a journey to discover the bluefin tuna.

PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.