In his Findings column for the New York Times, John Tierney wonders why Americans aren’t changing their lives in reaction to climate change. “We need the right nudge,” Tierney says, referring to the recent release from Yale Press authors Richard H. Thaler and Cass R. Sunstein, Nudge: Improving Decisions About Health, Wealth, and Happiness.

Taking a cue from Thaler and Sunstein, Tierney suggests a piece of jewelry that measures the wearer’s carbon footprint and displays it to the world on a scale from red to green. Writing a blog post for TierneyLab, Tierney nudged his readers to help him out with this project: “Do you have a better name, or a better nudge of kind? The best suggestion will be rewarded with a copy of Nudge: Improving Decisions About Health, Wealth, and Happiness by Richard H. Thaler and Cass Sunstein of the University of Chicago.” Click here to read the entire post or enter the contest.

For more information about nudges, check out Nudge or the website for the book, www.nudges.org, with news, reviews, a blog and even a glossary.