【英语时差8,16】真有大脚野人

Time once again for the mailbox, where we read your cards and letters. Let's see what we have. "Dear Moment of Science: Is Bigfoot for real? Signed, Nervous in the Northwest."   A terrific question! Everybody has heard of Bigfoot, the gigantic ape-like creature that supposedly haunts the forests of the Pacific Northwest. Plenty of enthusiasts¹ believe Bigfoot is real, though there isn't any evidence that would be convincing to a primatologist--that's a scientist who studies primates², such as apes and humans.

However, there once was a creature that actually resembled what Bigfoot is supposed to look like. That creature was the Asian Gigantopithecus, or "Giant Ape." And giant it was. Based on the very fragmentary fossil evidence we have, Gigantopithecus stood ten feet tall and weighed over half a ton. A creature like that would tower over any Bigfoot.

Giganto, as it is called for short, seems to have been a bamboo eater, something like modern day panda bears. It first appears in the fossil records we have about six-point-three million years ago and probably only disappeared for good around two hundred thousand years ago.

Why it went extinct no one knows for sure, but a reasonable guess is: us. Humans moved into Giganto's territory some eight hundred thousand years ago, and within half a million years or so it was gone. Did our early ancestors hunt it to extinction³? Did they deplete⁴ the bamboo resources themselves? We don't know. But the evidence makes it look like the real Bigfoot had more to fear from us than we do from him.  

1 enthusiasts   

n.热心人，热衷者( enthusiast的名词复数 )

参考例句：

• A group of enthusiasts have undertaken the reconstruction of a steam locomotive. 一群火车迷已担负起重造蒸汽机车的任务。 来自《简明英汉词典》
• Now a group of enthusiasts are going to have the plane restored. 一群热心人计划修复这架飞机。 来自新概念英语第二册

2 primates   

primate的复数

参考例句：

• Primates are alert, inquisitive animals. 灵长目动物是机灵、好奇的动物。
• Consciousness or cerebration has been said to have emerged in the evolution of higher primates. 据说意识或思考在较高级灵长类的进化中已出现。

3 extinction   

n.熄灭，消亡，消灭，灭绝，绝种

参考例句：

• The plant is now in danger of extinction.这种植物现在有绝种的危险。
• The island's way of life is doomed to extinction.这个岛上的生活方式注定要消失。

4 deplete   

v.弄空，排除，减轻，减少...体液，放去...的血

参考例句：

• Most native mammal species have been severely depleted.大多数本地哺乳动物的数量都已经大大减少了。
• Elastic collisions deplete very little of the electron's energy.弹性碰撞中电子减少的能量非常少。