Rohini Pande, professor of public policy at Harvard Kennedy School, co-directs the Evidence for Policy Design Initiative.
The poor often spurn government housing programmes because they do not want to risk losing their social networks.
Neither pollution nor congestion significantly decreased as they did during the January experiment. An enduring solution lies in scaling up the smaller, successful programmes.
Automating systems for disclosure may be the best option to strengthen transparency.
Two objects, part of a series of many envisioned by humanity, which has shaped our private lives and public histories