'Can a tree make you happy?' and \"I was a victim of the peanut butter recall'

Kathleen Wolf, a social scientist at both the University of Washington’s School of Forest Resources and at the U.S. Forest Service, studies how trees and green spaces can make urban dwellers healthier and happier.

Scott Dodd, food columnist, writes about his experience with the food giant Unilever's recall of its Skippy reduced fat peanut butter products across the Northeast and Midwest because of possible contamination with salmonella.

Both of these pieces appear on the Natural Resources Defense Council's On Earth blog.