The Weekly Newsmagazine of Science
Volume 155, Number 20 (May 15, 1999)References & Sources
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Making culture from scratch
A newly observed social custom among chimpanzees in Tanzania consists of one individual scratching another who is usually of higher rank within the community.
From Science News, Vol. 155, No. 20, May 15, 1999, p. 315. Copyright © 1999, Science Service.
Copyright © 1999 Science Service