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Science Nation: Lice and Human Migration

2 minutes 33 seconds

Now Playing As: Captioned (English) (change)

Paleo-anthropologists believe Homo sapiens evolved in Africa 100-200 thousand years ago, and eventually moved out of Africa to populate the globe. But, how can researchers trace the specifics of that human migration? With support from the National Science Foundation, Florida Museum of Natural History Mammologist David Reed has undertaken a novel approach. He studies the genetic diversity and evolution of the human parasite that hitched a ride the whole way: lice.

Media Details

Runtime: 2 minutes 33 seconds

Topic: Health and Safety, Science
Subtopic: Biology, Evolution, Hygiene
Grade/Interest Level: 9 - 12
Standards:

Release Year: 2009
Producer/Distributor: National Science Foundation
Series: Science Nation
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Computer screens with color-shaded images of a spiral shaped storm. Caption: study hurricanes, tornadoes, and blizzards from the inside.

Person filling a glass from a faucet. Caption: our risk of contracting some form of cancer would go up.

Green landscape with a hillside in the background. A small industrial installation is present. Caption: They don't know where to get information they can trust.

Robotic arms manipulating a small ball. Caption: is pushing the world of robotics and prosthetics

Bolt of lightning arcing from cloud to ground. Caption: we all want up-to-the-minute information.

Cluster of nerve fibers. Caption: that can image deep into biological tissue,

Dirty water with bubbles and PVC pipes. Caption: and reused again and again in a sustainable loop.

Person with a fabric cap strapped to their head. The cap has metal rivets and wires attached. Captions: (female) it feels maybe like a mild itchy or tingling sensation.

Microscopic image showing web-like structures and C shaped tubular organisms. Caption: (narrator) The soil itself is home to a vast number of tiny microbes,

White glowing orb against a black grid. Caption: Weakly Interacting Massive Particle