The Human Body: Life Story 生命物语-3

It's an amazing list. In fact, no life is an ordinary story. We'll each in our time do an incredible amount. And the driving force behind everything we do is the most complicated organ in our bodies a

The Human Body: Life Story 生命物语-1

There is one thing that everyone on earth has in common. We all live, eat and breathe within the human body. For two years I’ve been exploring this unique dwelling place. I want to show you what I'v

The Human Body: Life Story 生命物语-8

I can see the muscles that make up my face, my skull, and my own brain. So, now I can take you on that journey into my ear in a way that’s never been possible before. This time we can fly straight t

Alien Neighbors 寻访外星人 4

...in Mars. Although it was completely wrong about Mars and everything he said about Mars practically was wrong. But, he built up interest in the planet which has carried over to this day. And, so, he

Wild Europe - Genesis 肇始之初- 5

It took a ten-meter layer of fallen rain forest to make just a one-meter seam of coal. When you consider the depth of all the seams in all the coalfields worked in Europe, from Britain through to nort

Wild Europe - Genesis 肇始之初- 4

This was no ordinary forest. What looked like trees were in fact giant fern s, horsetails and club mosses , the fossils of which have been exquisitely preserved in this Scottish park. They offer a gli

Wild Europe - Genesis 肇始之初- 7

And when this rock was quarried , it also revealed traces of real monsters, the bones of huge dinosaurs. 117 million years ago, Oxford was a real-life Jurassic Park. Dinosaur fossils have been found t

Wild Europe - Genesis 肇始之初- 8

They make perfect roof tiles, but these tiles occasionally reveal something extraordinary. Perfect snapshot s from 115 million years ago, back then, Solnhofen was part of a very still and salty tropic

Alien Neighbors 寻访外星人 1

2042 A.D., powerful orbiting telescopes scour the heavens for signs of life. They focus on a dim yellow globe. Spectrum analyser results, negative, no oxygen, no life. The autotracker zooms into anoth

Alien Neighbors 寻访外星人 7

“And so with Magellan we’ve got the first chance, one of the first chances, ok, to really get a complete map and view of it.” The Venusian landscape has a desert-like appearance, but it’s a go

Alien Neighbors 寻访外星人 6

.....green plants ultimately. When it first appeared therefore, it would have been seen as a poison, it would have been a pollutant. But gradually, through Darwinian natural selection, living organism

Supermassive Black Holes 超大质量黑洞 - 8

In every galaxy scientists looked at, they found evidence for a supermassive black hole. NGC 3115 NGC 3377 NGC 3379 In M31 and M32 In total there is probably 20-30 or so black holes that have been fou

The Human Body: Life Story 生命物语-2

She'll crawl 150 kilometers before she's two. From then on, she'll learn a new word every two hours for the next 10 years. By the time she's ten, her heart would have beaten 368 million times. She'll

Wild Europe - Genesis 肇始之初- 2

And at other times, they'd have looked more like Africa's Serengeti Plains. More than 15 millions years ago, what is now Vienna and Paris would have been submerged beneath rich tropical seas. And over

Wild Europe - Genesis 肇始之初- 1

Europe, an ancient continent. Within its borders lies unrivalled richness of both natural and human wonders. At its northern limits, Europe reaches into the icy wastes of the high Arctic. To the south

Genghis Khan 成吉思汗 - 10

The Chinese could afford to employ people to fight for it . In the borderlands, the Mongols met a force of heavily armed mercenaries, who were loyal as only mercenaries could be. Reinforced by the mer

Genghis Khan 成吉思汗 - 14

He looked to the west to build on his conquests, not through war, but through trade. He sent ambassadors to Persia, and established a network of routes linked by staging posts, 40 kilometers apart. A

Supermassive Black Holes 超大质量黑洞 - 9

Four times a year, Ghez focuses the telescope on the stars of the very heart of our Milky Way. She is looking for the telltale high speeds that reveal the presence of a black hole. The center of the M

Supermassive Black Holes 超大质量黑洞 - 14

It means that Silk and Ree's theory may be right and if it is also right that supermassive black holes helped trigger star formation, then it must mean that all giant black holes and their galaxies ar

Supermassive Black Holes 超大质量黑洞 - 15

In January 2000, John Dubinski set out to calculate the final fate of our galaxy, the Milky Way, and that of our nearest neighbor, Andromeda. The Andromeda galaxy is actually falling towards the Milky