@BillGates: I had a fascinating conversation with Vaclav Smil about what bacteria, babies, empires, and economies all have in common: https://t.co/HUE9aiFLZz https://t.co/NBSLul2iMj
http://twitter.com/BillGates
I had a fascinating conversation with Vaclav Smil about what bacteria, babies, empires, and economies all have in common: https://t.co/HUE9aiFLZz pic.twitter.com/NBSLul2iMj
— Bill Gates (@BillGates) January 21, 2020
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