Prehistoric humans never threw spears at Tyrannosaurus rex but really did hunt mammoths and mastodons.

史前人类从未向雷克斯暴龙扔过长矛，但确实猎杀过猛犸象和乳齿象。

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Scientists say the diet of prehistoric humans probably required more chewing teeth.

科学家们表示，史前人类的饮食可能需要更多咀嚼齿。

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The findings can also reveal which animals prehistoric humans and human ancestors ate.

这些发现还可能解答史前人类和原始人类吃些什么的问题。

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Scientists say the diet of prehistoric humans probably required more chewing teeth.

VOA: special.2011.08.10

Practiced by humans since prehistoric times using wooden ski-shaped contraptions, cross-country skiing was popularised as a sport by the Norwegian military in the mid-1700s and was first imported to North America by Scandinavian immigrants in the 1850s.

BBC: Cross-country skiing in Washington��s Methow Valley

It has even been suggested that the link may hark back to prehistoric times, when humans stored up on fat during the summer months when food was plentiful and they slept less as a result of the shorter nights.

BBC: RELATED BBC SITES

Other caves in the Highlands include the Inchnadamph Bone Caves, where the prehistoric remains of animals, including bears, and humans have been uncovered.

BBC: Excavation at High Pasture Cave