“When it comes to the world around us,” Lisa Randall has written, “is there any choice but to explore?” As one of the most influential theoretical physicists working today, she’s interested in the interconnectedness between fields that have previously operated more autonomously: astronomy, biology, and paleontology. She’s pursuing a theory that “dark matter” might have created the cosmic event that led to the extinction of the dinosaurs — and hence humanity’s rise as a species. We learn what she’s discovering, as well as the human questions and takeaways her work throws into relief. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.

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“What did the council decide on item 42?” — answered with the speaker and the moment.

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