Material: Bird deaths, Coffee, Ancient Tools
from Material World Hosted by BBC Radio 4
Why are birds migrating to the UK falling out of the sky and dying? Loss of the wild Arabica coffee crop could have significant implications for the sustainability of high quality coffee and a haul of stone blades from a cave in South Africa suggests that early humans were already masters of complex technology more than 70,000 years ago. . .
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This episode is 28 minutes long.
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This episode was published on November 8, 2012.
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