This one is on economics, but it's good and easy to understand. I've included some of the comments because they're pretty good, and one of them mentions that "growth is over", an interesting view. The article describes why free trade always leads to vast income disparity and a crashing speculative bubble. He has a wonderful metaphor about the economy being like a plant -- consumer spending and capital investment are like sunlight and water -- you can't substitute one for the other and you need both.
Growth is over.