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How Harmful is Lead Pollution?
Controversies about leaded and unleaded fuels; eye test to diagnose Alzheimer's disease; is dark matter made up of neutrinos?; nerve growth factor research for treatment of Alzheimer's; lucid dreams.
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.
