Best-selling author Cass R. Sunstein examines how to avoid worst-case scenarios The world is increasingly confronted with new challenges related to climate change, globalization, disease, and technology. Governments are faced with having to decide how much risk is worth taking, how much destruction and death can be tolerated, and how much money should be invested in the hopes of avoiding catastrophe. Lacking full information, should decision-makers...

"Public entrepreneurship is not an oxymoron. During his years as a public official, Mitchell Weiss was told that government can't do new things or solve tough challenges--it's too big and slow and bureaucratic. Sadly, this is what so many of us have come to believe. But in the wake of the Boston Marathon bombings, he and his city hall colleagues raced to support survivors in new, innovative ways. This kind of entrepreneurial spirit and savvy in government...

"Public policy advocates routinely assert that "research has shown" a particular policy to be desirable. But how reliable is the analysis in the research they invoke? And how does that analysis affect the way policy is made, on issues ranging from vaccination to minimum wage to FDA drug approval? Charles F. Manski argues here that current policy is based on untrustworthy analysis. By failing to account for uncertainty in an unpredictable world, policy...