"A large literature examines the interaction of private and public funding of public goods and charities, much of it testing if public funding crowds out private funding. This paper makes two contributions to this literature. First, the crowding out effect could also occur in the opposite...

"When consumers exhibit present bias and are time-inconsistent, the standard solution to market failures caused by externalities-Pigouvian pricing-is suboptimal. I investigate policies aimed at externalities for time-inconsistent consumers. Welfare-maximizing policy in this case includes an...