Our ancient ancestors, deep sea worms

Why textbook depictions of our early ancestors may have to be re-drawn; and why underwater canyons contain a wealth of life...
19 February 2013
Presented by Richard Hollingham, Sue Nelson

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This week in the Planet Earth Podcast: why textbook illustrations of our early ancestors may have to be re-drawn; and why underwater canyons contain a wealth of life, including some rather ugly-looking worms.

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