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Space Walk to Work on the Hubble Space Telescope
Upgrading the Hubble telescope; drugs to boost your memory; ancient south Americans in Chile upset the Clovis theory; kamikaze robotic birds; did aquatic creatures' gills evolve into insect wings?
BBC World Service Archive
This programme was restored as part of the World Service archive project
Podcast
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Science In Action
The BBC brings you all the week's science news.
