検索キーワード： 絶滅危惧種

The sixth "mass extinction event" in the history of planet Earth is currently under way, with over two hundred species dying off every day. The cause of this seismic event is also the source of the single biggest threat to human life: our own inventions. But for all our talk about sea levels and biotechnology, do we really know what our future will actually look like? Will our immune systems be attacked by so-called super bugs, always evolving, and more easily spread than ever? Will the disappearance of numerous species cripple the biosphere?

Rat Island rises from the icy gray waters of the Bering Sea, a mass of volcanic rock covered with tundra, midway between Alaska and Siberia. Once a remote sanctuary for enormous flocks of seabirds, the island gained a new name when shipwrecked rats colonized, savaging the nesting birds by the thousands. Now, on this and hundreds of other remote islands around the world, a massive - and massively controversial - wildlife rescue mission is underway.

Naturalist Joe Hutto’s latest adventures in wildlife observation take him to Wyoming’s Wind River Mountains. Hutto is living in a tent at 12,000 feet, where blizzards occur in July and where human wants become irrelevant—and human needs can become a matter of life and death—to study the Rocky Mountain bighorn sheep.

When it comes to the natural world, Australia is home to a disproportionately large share of the world's riches. That means we Australians are caretakers of a unique natural heritage in a land which tolerates few mistakes. So how are we doing? In Quarterly Essay 48 Tim Flannery says: we're often failing nature. In the clash between money and conservation, money usually wins.

As recently as 11,000 years ago - "near time" to geologists - mammoths, mastodons, gomphotheres, ground sloths, giant armadillos, native camels and horses, the dire wolf, and many other large mammals roamed North America. In what has become one of science's greatest riddles, these large animals vanished in North and South America around the time humans arrived at the end of the last great ice age.

It’s December 1997, and a man-eating tiger is on the prowl outside a remote village in Russia’s Far East. The tiger isn’t just killing people, it’s annihilating them, and a team of men and their dogs must hunt it on foot through the forest in the brutal cold. As the trackers sift through...

From world-renowned scientist Jane Goodall, as seen in the National Geographic documentary Jane, comes an inspiring message about the future of the animal kingdom. With the insatiable curiosity and conversational prose that have made her a bestselling author, Goodall—along with Cincinnati Zoo...