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About 3 billion people in the world do not have access to modern energy sources for cooking and heating their homes. They are suffering...

I study the data on today’s global inequality to calculate the minimum aggregate growth that is required to reduce global poverty...

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  • Educational psychologist Benjamin Bloom found that one-on-one tutoring using mastery learning led to a *two sigma improvement* in student performance. @ArtirKel reviewed the relevant studies to learn whether young children could learn better https://t.co/tJL2z3wWpc - view on twitter

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riowang.blogspot.com

Georgia, minute by minute. 1. Tbilisi - 22 hours

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In the morning I get a call in Berlin from an unknown Georgian number. Before I know who it is, she first asks, in...

  • A bit of very perceptive, fun, and well-informed travel writing from a recent trip to Tbilisi: https://t.co/nvp7fzP41C Really enjoyed reading this essay. And if you should ever have the chance to go to Georgia then do it. I went some years ago and loved every day there. - view on twitter

We live in a world in which 10 children die every...

Our vaccination dataset uses the most recent official numbers from governments and health ministries worldwide. The population estimates we use to calculate per-capita metrics...