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The rise of the dinosaurs 恐龙的崛起 Pardon! 恕我直言! A geological burp may have led to thedinosaurs domination 地质上的甲烷释放可能是恐龙称霸地球的原因 THE dinosaurs, famously, went out with a bang. 众所周知，恐龙在地球上是突然消失的。 Some 65.5m years ago, at the end of the Cretaceous period, the Earth collided with anasteroid and the biggest terrestrial beasts in history were no more. 大约在6500万年前的白垩纪末期，地球与小行星相撞导致最大的陆地兽类全部灭绝。 That left things clear for the rise of the mammals. 此次灭绝事件为哺乳动物的崛起提供了契机。 But how did the dinosaurs rise to power in the first place? 但首要的是恐龙是如何崛起的呢? Some light on this question has justbeen shed by a paper published in Science by Micha Ruhl of Utrecht University, in theNetherlands, and his colleagues. 荷兰乌得勒支大学迈克尔鲁尔及其同事在最近一期科学杂志上撰文对此问题进行了阐述。 Dinosaurs first appear in the fossil record during the Triassic period, some 230m years ago. | 
