The genetic study of lice strongly suggests they - and clothing - arose soon after modern homo sapiens began moving out of Africa and into the coolerregions of Europe.

• 对虱子起源的研究,强而有力的说明,随着人类衣服的产生,虱子也就滋生了,并且由非洲进入到气候较冷的欧洲地区。