"The economics of environmental federalism identifies two book-end departures from the first-best, which equates marginal costs and benefits in all local jurisdictions. Local governments may respond to local conditions, but ignore inter-jurisdictional spillovers. Alternatively, central...

"The NBER Bulletin on Aging and Health provides summaries of publications like this. You can sign up to receive the NBER Bulletin on Aging and Health by email. Most non-elderly Americans purchase insurance through their employers, which sponsor a limited number of plans. We estimate how much...