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Genetic Footprints
Where did I come from? What makes me unique? What makes us human? Sarah Tishkoff asks these questions every day as she studies the role of evolution in shaping human history and health.

Dr. Sarah Tishkoff

Past to Present
Joe Thornton goes back 450 million years in time to piece together the evolution of hormones and their receptors. This archaic biology, he says, can help us better understand who we are today.

Dr. Joe Thornton

Just Found
Read about, evolution, chimps, malaria, skin bacteria and more.

This microscopic image shows bacteria
living underneath a human toenail. Courtesy: Darlyne Murawski, National Geographic Society
This page last reviewed on May 18, 2011