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Podcast: The DemystifySci Podcast
Episode: Engineering the Atmosphere - Dr. David Keith, Harvard
Description: What if the day comes that humans need to make massive, intentional changes to the earth in order to ensure the survival of the species? Perhaps the solar radiation from the sun increases, or the orbits of the planets shift, or greenhouse gases accumulate to fatal levels. These changes could result in the kind of intense warming that happened during the cretaceous, when palm frond and freshwater ferns dominated the polar landscapes. According to some, the best strategy for avoiding this kind of cataclysmic change is to, quite literally, block out the sun. It sounds risky, pre-apocalyptic, and almost h...