Zita Martins on meteorites

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How did life originate on Earth, and are we alone in the
universe? These are the questions that Zita Martins, an
astrobiologist at Imperial College London, is determined to answer.
She talks to the Wellcome Trust's Daniel
Glaser about meteorites, the possibility of life on Mars,
and more.
This packed lunch event was recorded live
on 7 December 2011 at Wellcome Collection.
Image: Analyzing stardust. Argonne National Laboratory / Science
Photo Library.