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  1. I love how this course breaks down the history of the universe and explains how everything ties together:

  2. The series debuts tonight. It tells the universe's fascinating story. I hope you'll watch it:

  3. I don’t watch a lot of TV but I’ll be watching the new series. It starts tomorrow night:

  4. Here’s a timeline of the fight against polio. Look at how much has happened since 1988:

  5. My friend Ray Dalio gives a simple (but not simplistic) explanation for how credit works:

  6. will need much more energy by 2030. It’s hard to estimate precisely, but the gap is “massive”:

  7. I disagree with first ½ of the headline here, but I like ’s thinking about effective aid:

  8. ., you mean there isn't already a website for gym rats exchanging body oil recipes? Thanks for the idea!

  9. What are the prospects of ending extreme poverty? This interactive chart shows how far we've come since 1990:

  10. The idea that aid is wasted is just wrong. I recently spoke with the Sun newspaper about the impact of the UK's aid:

  11. The devastating effects of make it hard to live a normal life. A surgeon in is working to change this:

  12. Hunger around the world is down 1/3 since 1990. Where is hunger still a problem? Here's a map:

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