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THE MATERIAL WORLD
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MISSED A PROGRAMME?
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PROGRAMME INFO |
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Quentin Cooper reports on developments across the sciences. Each week scientists describe their work, conveying the excitement they feel for their research projects.
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Contact Material World |
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LISTEN AGAIN Ìý30 min |
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PRESENTER |
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"For me science isn't a subject, it's a perspective. There are fascinating scientific aspects to everything from ancient history to the latest gadgets, outer space to interior decorating; and each week on The Material World we try to reflect the excitement, ideas, uncertainties, collisions and collaborations as science continues its never-ending voyage into the unknown".
Quentin Cooper |
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PROGRAMME DETAILS |
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Taking blood samples in Chad
Picture by David Evans © |
Mankind's genetic origins
Where do we actually come from? That is the question that the National Geographic Genographic Project has been trying to answer.Ìý By collecting DNA samples from people all over the world, theÌýprojectÌýis trying to unlock the secrets to humankind's ancestral past.
To explain howÌýgenetic differencesÌýcanÌýtell us about howÌýhumanity spread around the globe, Quentin Cooper is joined by Spencer Wells, director of the Genographic project, and Mark Thomas from theÌýCentre for Genetic Anthropology at University College London.
Space Junk
Nearly 50 years ago the first artificial satellite, Sputnik I, was launched into space. Since then the thousands of objects that have followed in Sputnik's path have created a blanket of rubbish that orbits the Earth. Space debris, travelling at 25,000 milesÌýper hour,Ìýis a real threat to space craft and active satellites - a collision could have devastating consequences.Ìý
Dr Emma Taylor from The Open University, who recreates 'hypervelocity impacts' in the lab,Ìýand Dr Stuart Eves, Principal Engineer with Surrey Satellite Technology Ltd, will join Quentin Cooper toÌýtalk about how whatÌýgoes up doesn't always come down.Ìý
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