A recent piece in the Economist on Mexico’s debates is an interesting addition to my library of ‘how change happens’ case studies, and reminded me of conversations I had thirty years ago, when legalization seemed a purely theoretical possibility. Would legalization mean small farmers get a new and stable market for their crop, free from the violence and chaos associated

Guest post by Ken Shadlen of the LSE The Covid-19 pandemic has sparked a global race of public- and private-led research to develop vaccines and treatments. Will patents hinder access to the products it generates? My summary? With regard to treatments (the dynamics around vaccines may differ), access problems will mainly affect middle-income countries. While low-income countries will likely receive