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Scientists hunt for a mega-eruption that plunged medieval Earth into a deep freeze.
Airing October 25, 2017 at 9 pm on PBS
NOVA on Facebook: https://www.facebook.com/NOVAonline NOVA on Twitter: @novapbs NOVA on Instagram: @novapbs
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Scientists hunt for a mega-eruption that plunged medieval Earth into a deep freeze.
Airing October 25, 2017 at 9 pm on PBS
NOVA on Facebook: https://www.facebook.com/NOVAonline NOVA on Twitter: @novapbs NOVA on Instagram: @novapbs
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