标签：太空生存 相关文章
Tyrannosaurus Rex when we think about it, we tend to think of the big adult because thats the skeletons that we see, but we know that they didnt hatch that way. Once those eggs hatched, weve got an animal thats maybe, you know, three feet long, maybe
探索与发现2013年
There probably werent many animals of Cretaceous that would dare to try to grab a baby Tyrannosaurus Rex. Quetzalcoatlus could probably manage it. If you see a stork on the Nile today eating a baby crocodile, you can imagine in your mind Quetzalcoatl
探索与发现2013年
When you start off coming out of the egg and youre less than, say, 2 feet long and you are in a world full of predators that are loving to crunch on you, then you need to get big fairly quickly. The future seems bleak for this dinosaur. With its life
探索与发现2013年
Male lions defend their cubs against rivals who see their offspring as future competition for food and mates. So its likely that an intelligent predator like T-Rex would do the same. Compared to prehistoric plant eaters, its cerebrum, the part of the
探索与发现2013年
T-Rex is impressive and it's powerful, but compare to Ankylosaurus, it is relatively lightly built. Protective plates made of bone and cartilage covered this lumbering creature from head to tail. Light, but extremely strong, the hide of Ankylosaurus
探索与发现2013年
And there is something else unusual about a T-Rexs nose. The nostrils are a huge 25 centimeters apart, which means T-Rex can smell in stereo. It can triangulate an odor and pinpoint its exact source. T-Rex could walk into a crowded auditorium and in
探索与发现2013年
One could imagine that the conflict between Tyrannosaurs and Triceratops may have been one of the greatest combats that nature has ever had. And this well-protected herbivore is everywhere. In fact in the Late Cretaceous, Triceratops outnumbered Tyra
探索与发现2013年
Like sea turtles who from the moment they hatch they are on their own. For predators, hatching time is a veritable feast. Even so, the strategy works. Carnivores gulp down virtually every hatchling, but a few do make it, not even the most voracious f
探索与发现2013年
But with both parents out searching for food, the nest is left unguarded and exposed. Triceratops may be a plant eater, but with a defenseless baby T. Rex around, it'll make an exception. Quetzalcoatlus is the largest flying carnivore in Earth's hist
探索与发现2013年
Even if the animail managed to survive, the wounds generated from the bite, the prey dinosaur would get weaker and sicker, and the predator could then hunt it down and kill it. Bitten by a T-Rex, and youre downfall, be it now or later. And once you a
探索与发现2013年
It's a digestive process more like those of carnivores. And Sauroposeidon has another trick for growing to mammoth proportions--hollow bones. Its backbone, neck, and ribs have walls just a few milometers thick. Even its limbs are far less dense than
探索与发现2013年
I mean, these guys were, frankly dumb as a fence post. Sauroposeidon does almost everything by instinct, including rearing or more accurately not rearing its children. It may seem cruel to just dig a hole and leave your eggs and wander on, but its a
探索与发现2013年
Dinosaurs ruled the earth for millions of years. They grew to almost unimaginable sizes,nd adapted to extreme environments all over the globe. These animals were very successful and really, some of the crowning achievements of evolution. And they do
探索与发现2013年
Science and technology. 科技。 Astronomy. 天文学。 Psst. Want a space telescope? 喂，要太空望远镜吗？ America's spies make a generous donation to NASA. 美国间谍机构对NASA慷慨捐赠。 AMERICA'S civilian space programme is bu
经济学人综合
A diamond worth ?12,000 was shot into space this morning - and whoever finds it when it lands back on earth gets to keep it. 今天早晨一颗价值1万2千英镑的钻石被送入太空，在它落地后，谁能找到它，它就归谁。 A diamon
英语新闻
OS-X was assembled in the laboratory where its remnants now reside. OS-X是在实验室中装配的，OS-X的残料现在还在这间实验室内。 But OS-M, the next generation, will be built in a factory now nearing completion in Chongqing. 但是在
经济学人科技系列
Science and technology 科学技术 The military uses of space 太空军事用途 Spooks in orbit 轨道间谍卫星 The other space programme 另类太空计划 DESPITE its strong inheritance of military DNA, 尽管美国航空航天局有着浓重的
经济学人科技系列
In the first half hour, the stock shot up to $45, and trading had to be delayed because there were too many buy orders. 开盘半小时，股票价格就飙升至45美元，因为买盘太多交易不得不延迟进行。 It then went up even further
乔布斯传
The stakes were raised when Toy Story opened to blockbuster commercial and critical success. 当《玩具总动员》获得巨大的商业成功和业界认可后，抉择变得更为艰难。 It recouped its cost the first weekend, with a domestic o
乔布斯传
Leaders Satellites Space: the next startup frontier 社论精粹 卫星 太空：下一个 Where nanosats boldly go, new businesses will followunless they are smothered with excessive regulations 微型卫星大胆地去哪儿，新的商业就会跟去
经济学人文艺系列