How to Save the World. (No, seriously.)
Matt McCormick: Naturalism and the A Priori.
Excellent podcast: BBC – A Brief History of Mathematics.
“A simple idea: take an ordinary savings account, but instead of paying interest to account holders, hold a lottery to see who gets the lump sum… In Highland Park, MI, PLS accounts have been very successful at converting “non-savers” into “savers”. Why hasn’t it caught on in the US? It’s illegal in most states.”