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The Perils of Prospecting for Gold
Gold prospecting; maize enlists wasps when attacked by armyworm catepillars; "it's on the tip of my tongue" and other signs of ageing; analysing meteorites; why some bat colonies make two echo calls.
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.
