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Geoff Watts asks why the source of new medical drugs is drying up.
Melvyn Bragg and his guests discuss the emergence of geology as a scientific discipline.
Melvyn Bragg and his guests discuss the emergence of geology as a scientific discipline.
The history of the private trading company that helped forge the British Empire.
Melvyn Bragg discusses why revenge tragedy was so popular with Elizabethan theatre goers.
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