What Goes Up | Science News

Support Science Journalism

Science News is a nonprofit.

Support us by subscribing now.


Feature

What Goes Up

Big-city air pollution moves to the burbs and beyond

By
10:13am, September 5, 2007

Jeffrey S. Gaffney, a sunburn-prone atmospheric scientist, set off one morning in March 2006 for a day of field work in Mexico City—without his hat and sunscreen. At Mexico City's altitude, 2,240 meters above sea level, sunlight beating down through the thin air delivers as much as 30 percent more ultraviolet radiation than reaches coastal regions. "I thought I'd be fried at the end of the day, for sure," he recalls.

This article is only available to Science News subscribers. Already a subscriber? Log in now.
Or subscribe today for full access.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content