Babbage from The Economist podcast

Babbage: Cleaning the air

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The World Health Organisation recently declared that air pollution is the greatest environmental threat to health globally. What do cities and governments need to do to clean up their act? Also, we explore how Occam’s razor, ​​a theory from a medieval theologist, has influenced science. And, could music be an effective way to communicate with extraterrestrials? Alok Jha hosts


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