其他
BBC纪录片：《恐龙灭绝之日》The Day The Dinosaur Died
经典节目
口语积累
资源下载
BBC纪录片
《恐龙灭绝之日》
Experts suspect that the dinosaurs were wiped out after a city-sized asteroid smashed into the Gulf of Mexico causing a huge crater. But until now, they haven't had any proof. In a world first, evolutionary biologist Ben Garrod joins a multi-million pound drilling expedition into the exact spot the asteroid hit to get hard evidence of the link. The team overcomes huge obstacles as it attempts to drill 1,500 metres beneath sea level to pull up rock from the Chicxulub crater.
Meanwhile, paleopathologist Professor Alice Roberts travels the globe meeting top scientists and gaining exclusive access to a mass fossil graveyard in New Jersey - believed to date from the same time the asteroid hit. Alice also treks by horseback across the remote plains of Patagonia, to see if the effects of the asteroid impact could have wiped out dinosaurs across the world - almost immediately.
Alice and Ben's investigations reveal startling new evidence of a link between the asteroid and the death of the dinosaurs, presenting a vivid picture of the most dramatic 24 hours in our planet's history. They illustrate what happened in the seconds and hours after the impact, revealing that had the huge asteroid struck the Earth a moment earlier, or later, the destruction might not have been total for the dinosaurs. And if they still roamed the world, we humans may never have come to rule the planet.
如果小行星碰撞地球，并未导致恐龙灭绝消失，之后随着时间推移，将会出现怎样的变化？它们的存在如何影响人类在内的哺乳动物呢？
人类如果与恐龙生活一起，他们将面临着更大的生存威胁。
如果植物进化像现代环境继续进行，那么食草恐龙必定会主要以开花植物为食。考虑到开花植物更容易消化，或许食草恐龙的体形会逐渐缩小，那么中生代时期巨型恐龙将会消失。
海洋是恐龙探索的另一个栖息领域，考古学家发现棘龙曾在江河口环境涉猎水栖生物，长有盔甲的甲龙骨骼化石也存在于海洋沉积层中，它们很可能在海岸线附近生活。或许棘龙和甲龙会沿着哺乳动物鲸鱼的进化路径发展，能完全在海洋中生存下来，它们也有可能返回陆地产卵，幼崽在岸边陆地孵化之后再回到海洋之中，其繁殖方式类似于鱼龙和蛇颈龙。
RECOMMEND
推荐阅读