人类是非常成功的动物。但我们人类,曾一度濒临灭绝。David Goldstein教授在现代人类发源地非洲,发现了一个非常古老的人口瓶颈证据。人口瓶颈就是某种种群的数量在演化过程中减少了遗传差异或多样性的事件。(人口瓶颈发生的一种可能方式就是通过灾难,消灭超过50%以上的大比例的 Humans are very successful animals. But we humans, once on the verge of extinction Professor David Goldstein found evidence of a very ancient population bottleneck in Africa, the birthplace of modern humanity. The population bottleneck is the event in which the number of certain populations reduces genetic variation or diversity in the evolutionary process. (One possible way that a population bottleneck happens is through disasters, eliminating a large proportion of over 50%