The content you've requested is available without charge only to active Sigma Xi members and
If you are an active member or an individual subscriber, please log in now in order to access this article.
If you are not a member or individual subscriber, you can:
The traditional view of human evolution holds that our ancestors gradually evolved from South and East African fruit eaters to scavengers or hunters by purely biological adaptation to changing environmental conditions. Likewise, social scientists assumed that cultural characteristics evolved exclusive of biological influences. In recent decades, however, it has become clear that this picture is far too simple. In fact, biological and cultural evolution are not separate phenomena but instead interact in a complicated manner. One example is the progressive development over the past 10,000 years of lactose tolerance in adult humans—a genetic mutation selected for in populations that herd animals and consume dairy. The authors review this and several other examples of the interplay between genes and culture.
Connect With Us:
An early peek at each new issue, with descriptions of feature articles, columns, and more. Every other issue contains links to everything in the latest issue's table of contents.
News of book reviews published in
and around the web, as well as other noteworthy happenings in the world of science books.
To sign up for automatic emails of the
American Scientist Update
issues, create an
, then sign up in the
My AmSci area
JSTOR, the online academic archive, contains complete back issues of American Scientist from 1913 (known then as the Sigma Xi Quarterly) through 2005.
The table of contents for each issue is freely available to all users; those with institutional access can read each complete issue.
View the full collection here.
Receive notification when new content is posted from the entire website, or choose from the customized feeds available.