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NESHA ICHIDA KNELT in a turquoise lagoon in Indonesia's Raja Ampat Islands and gently cradled a baby shark. The creature twisting beneath her fingers looked like something imagined by a [...]

WE'VE REACHED A NEW MILESTONE in the human journey. Last November, according to the United Nations, the number of people on Earth hit eight billion. Our population has doubled in [...]

Now a couple of scientists sampled his DNA to measure how fast this fur ball was growing. Since 1962, scientists in this high mountain meadow have been mapping marmots' social [...]

AMID ROLLING FARMS and green pasture 150 miles northwest of Sao Paulo, Brazil, two tropical forests bloom as one. The first consists of a single species, row after row of [...]

THE FIRST THING YOU NOTICE in this fire-scarred forest is the color. Not long ago this square of land south of Yellowstone National Park was a monochrome of ash and [...]

AT VOLKSWAGEN'S ASSEMBLY PLANT in Chattanooga, Tennessee, car bodies soar high above the concrete floor on conveyors, like seats on a slow-moving carnival ride. Every 73 seconds one gets lowered [...]

Seven trees sprout on a hillside near the southern tip of South America, above the treacherous swirl of spray where the Pacific Ocean meets the Atlantic. It's not an impressive [...]

JOHN FORD WANTED a whale's-eye view. One summer day in 1978 a pod of killer whales raced toward a pebbled beach on British Columbia's Vancouver Island. The young biologist was [...]

ON A WEATHERED PROMENADE at the edge of the Pacific, near the photo booths and the pretzel stand and a man molding busts of tourists out of clay, spins a [...]

TO SEE ALL THAT'S HOPEFUL and appalling about the way we treat sea turtles, there's no better place to start than the Burj Al Arab Jumeirah hotel. This shimmering tower [...]

SERGEY ZIMOV, AN ECOLOGIST BY training, tossed a woolly mammoth bone on the pile. He was squatting in mud along the cool, wide Kolyma River, below a towering cliff of [...]

HE WAS BORN ON A SAILBOAT in Leith Harbour, an abandoned whaling station on South Georgia island. His father, a French adventurer, had met his mother, an Australian zoologist, on [...]

It's daybreak at 11,000 feet, and somewhere below, the monkeys are stirring. Admassu Getaneh marches past flowering herbs and thick grass along the edge of a plateau in the central [...]

Acres of aspens = one colossal tree At more than 6,500 tons, a grove of quaking aspens growing on 106 acres in Utah is, by weight, Earth's largest known land [...]

THE FIRST FIN WHALE appeared in Marmot Bay, where the sea curls a crooked finger around Alaska's Kodiak Island. A biologist spied the calf drifting on its side, as if [...]

In just a few decades the United States could eliminate fossil fuels and rely 100 percent on clean, renewable energy. That's the bold vision of Mark Jacobson, a Stanford engineering [...]

Craig Parker popped his head above his head above the surf, peeled off his dive mask and clambered aboard the Ichiban. We were anchored 50 yards offshore from a fir-lined [...]

ERIC FORSMAN TRAMPED ACROSS the spongy ground with one ear tipped to the tangled branches above. We were circling an isolated Douglas fir and cedar stand near Mary's Peak, the [...]

The man who has protected more of the sea than anyone in history is entirely at ease in it. You see that right away. In September, just months before he [...]