Emperor Qianlong liked it very much and had a poem inscribed on it. Now placed in a glass shelter, the fossil tree is a treat to sightseers.

乾隆很喜欢这块化石，曾赋一诗刻于石上，现已装上玻璃护罩，供游人观赏。

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But lack of definitive fossil evidence has many guessing whether this primate was really a biped-and just where she might fit on the human family tree.

但由于缺少决定性的化石证据，关于这种灵长类动物是否是两足动物——以及她在人类的家族树中究竟占据什么位置——存在着许多猜测。

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This small weakening of the sun, however, has been outpaced by the rapid increase in CO2 levels from all our fossil fuel burning and tree-cutting.

虽然太阳活动降低了，但是我们燃烧化石燃料和砍伐树木引起了CO2的快速升高。

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But the researchers say the new fossil shows the Alvarezsauridae group split from birds much earlier on the evolutionary tree than was thought.

BBC: New dinosaur discovery solves evolutionary bird puzzle