
Nature
The history of diamonds, from their beginnings in the earth's core to mining and acquisition.

The history of diamonds, from their beginnings in the earth's core to mining and acquisition.

How wildlife and animal life survive in a severe landscape with temperatures well above 115 degrees.

The 1883 eruption of Krakatau.

Animals endure hostile environment of South Africa's Drakensberg Mountains.

Volcanoes, monstrous waves and whales of Hawaii.

Unique animals and plants flourish atop mist-shrouded Venezuelan plateaus thousands of feet above the surrounding jungle.

Exploring Ireland's wildlife amid its mountains, coastlines, steep gorges and inland waterways.

Eagles, pumas, sandhill cranes and other creatures seek sustenance from the Colorado River and its environs.

Griffin vultures, imperial eagles, genets and other animals native to Africa find shelter in the forest.

The human and natural histories of the Grand Tetons and Jackson Hole, Wyo., interlink.

Emmy-winning filmmaker Hugh Miles presents a lyrical portrait of Scotland's Caledonian Forest.

Grizzlies, wolves and cougars roam Montana's rugged, pristine Glacier National Park.

Scientists reveal the hidden world of white-tailed deer in a whole new light.

Exploration of Puget Sound's ecosystem.

Exploration of Puget Sound's ecosystem.

Sharks, rays, squids and blue whales live in Pacific waters off the California coast.

Take on the mystery of the eel with artist, writer and eminent naturalist James Prosek.

Daily animal life in Patagonia.

The breeding and feeding habits of rare species of penguins.

Uncover the activity, both human and natural, that occurs on the slopes of volcanoes.