Single-stream recycling enables households to recycle an unsorted mix of cans, plastic, glass, and paper, thereby reducing recycling costs. The expansion of single-stream recycling in Wisconsin provides a natural experiment to assess the extent to which single-stream increases recycling...

This article analyzes changes in recycling behavior using a longitudinal national U.S. dataset with over 235,000 pairs of same-household observations to measure changes in recycling behavior. Changes in recycling are greater if others in the county increased their recycling rates. Policies that...