Tapeworms tell tales of deeper human past | Science News

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Tapeworms tell tales of deeper human past

2:39pm, April 4, 2001

People have been blaming the wrong episode in history for endowing our species with tapeworms, according to parasitologists.

For decades, most scientists assumed that humanity picked up tapeworms while domesticating cattle and pigs some 10,000 years ago, explains Eric P. Hoberg of the Department of Agriculture in Beltsville, Md.

After a new analysis of the tapeworm family tree, however, Hoberg and his colleagues push the wormy leap to people much further back in history. The closest relatives of our tapeworms spend their early stages in grazing animals and thei

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