To better understand the historical motivations of cannibalism, a new study looks into the nutritional value of human body parts.
By Nsikan Akpan
The celebrated American poet was not a fan of vegetarians.
By Kamala Kelkar
The September issue of National Geographic examines the Paleo Diet as a way to feed the planet's future generations — and offers a more complete look at what our ancestors really ate. Science writer Ann Gibbons joins Hari Sreenivasan to…
By PBS NewsHour
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