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Particles of Thought
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How Many Microbes Live on Earth? | Peter Girguis

1 min•4 februari 2026

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 extended interview with Peter Girguis.

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Why Dark Matter Matters
•28 min
How Many Leaves Are on a Tree? | Kirk Johnson
•2 min
The Air You Breathe Is Bacteria Poop | Peter Girguis
•1 min
The Fish That Could Walk | Sean B. Carrol
•2 min
How Close Can You Safely Get to a Black Hole? | Janna Levin
•2 min
A New Law of Nature? | Robert Hazen & Michael Wong
•3 min
AI Is Coming for Blue Collar Jobs | Hany Farid
•2 min
What Species Can We De-Extinct? | Beth Shapiro
•2 min
Were Dinosaurs Able to Sing? | Erich Jarvis
•1 min
Space-Time Expansion, Explained | Adam Riess
•2 min

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