Sorry, Beyoncé, it turns out microbes rule the world. Microbiologist Peter Girguis explains how to conceptualize just how many microbes are on Earth… and how understanding this helps us look for life on other worlds. 

For more, check out the <a href="https://www.wgbh.org/podcasts/particles-of-thought/extended-interview-extremophiles-the-deep-sea-and-alien-life-with-peter-girguis">extended interview</a> with Peter Girguis.

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What Exactly Is a Law of Nature? | Robert Hazen & Michael Wong

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