The Human Body: Life Story 生命物语-7

They haven't changed because their environment has stayed the same. The water they live in bubbles up from deep in the earth, and so it's always the same temperature. But just meters away the environm

Life in the Freezer 冰雪童话 - 8

Throughout the winter, adults come and go from their traditional breeding colonies. Antarctica is home to 2 million Kings. In this one colony alone, there are 600,000 of them. These engaging chicks ar

Alien Neighbors 寻访外星人 5

Understanding how life got going on our own planet will help us target where we look for it in space, both within the solar system and beyond. Biophysicist, David Deamer, studies tide pools. A tide po

Wild Europe - Genesis 肇始之初- 3

In the east, another ancient range, the Urals , separates Europe from Asia. Both these ranges are evidence of Europe's earliest formation, the results of processes that began half a billion years ago.

Horizon - Life On Mars 火星生命 - 5

William Boynton is professor of planetary sciences at the University of Arizona. And he's dedicated his life to looking for water on Mars. The link between life and water is very strong. Even here in

The Great Wall 万里长城 - 7

And many never returned home, ending up in graveyards like this one. Large tombs for generals, small ones for the soldiers, and all of them died defending the Great Wall. But the soldiers' misery did

Horizon - Life On Mars 火星生命 - 6

For Mars to have rivers, it must once have had streams, rain, clouds and an atmosphere, a planet just like the Earth today-if these were rivers. They had to be sure. The answers would come in 1998 wit

The Ghost In Your Genes - 1 基因外遗传现象

We are on the brink of uncovering a hidden world, a world that connects past and future generations in ways we never imagined possible. What this means is an environmental exposure that your grandmoth

Horizon - Life On Mars 火星生命 - 7

Rice had seen the same thing in Iceland, one of the few places on Earth with similarities to Mars. It too is extremely cold, and most of the water is frozen into glaciers. And also like Mars, buried u

Horizon - Life On Mars 火星生命 - 8

But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough

FBI - 揭密联邦调查局 - 7

Despite the risk, Spence allows the FBI to rig a video camera in the dashboard of his truck. Here, the hidden camera records one of the suspects describing how he is going to make a bomb. But getting

Life in the Freezer 冰雪童话 - 1

I am at the very center of the great white continent, Antarctica. The South Pole is about half a mile away. For a thousand miles, in all directions, there is nothing but ice. And, in the whole of this

Life in the Freezer 冰雪童话 - 2

Rivers of ice spill down from the icecap as great glaciers and creep slowly towards the edge of the continent and the sea. When you get beneath the snout of one of these huge glaciers, you begin to ap

Life in the Freezer 冰雪童话 - 3

Huge though bergs may be, they are nonetheless usually on the move. But come the winter, sea ice forms around them and locks them solid. As winter progresses, so more and more of the sea freezes, spre

Life in the Freezer 冰雪童话 - 4

Humpback whales. During the brief summer they gorge themselves on krill. When the krill swarms are near the surface, the humpbacks collect them by lunging . They simply open their cavernous mouths and

Life in the Freezer 冰雪童话 - 5

Other creatures benefit from the whales' industry-sea birds forage in their wake. As the whales drive the krill closer to the surface, it comes within reach of birds that are not particularly skilled

Life in the Freezer 冰雪童话 - 6

Fur seals also feed out in the open ocean, but they are able to dive to a hundred meters or more. The patchiness of the krill requires those that live on it to spend a great deal of time searching. An

Life in the Freezer 冰雪童话 - 7

An adult wanderer may travel 5, 000 miles, sometimes to Brazil and back, in order to collect squid for its young. This enormous chick weighs 10 kilos, as much as a full-grown swan. It's the biggest of

The Ghost In Your Genes - 3 基因外遗传现象

Named after Henry Angelman, the pediatrician who first described Angelman syndrome. He referred to them as happy puppet children because it described, to some extent, the features. They have a rather

FBI - 揭密联邦调查局 - 1

Tonight on Best Kept Secrets, we go inside one of the world's most secretive crime-fighting organizations, the Federal Bureau of Investigation. How does the FBI solve cases like the Oklahoma City bomb