Two College alumni, working in New York City, sparked a global trend in tracking sustainability.

Joseph Sax, JD’59 (1936–2014), helped establish the courts as a front line for environmental activism.

As the leader of UChicago’s energy policy and economic research institutes, Michael Greenstone, LAB’87, works to help the world confront the global energy challenge.

The impact of geochemist Clair C. Patterson, PhD’51, who determined the age of the earth and fought lead pollution.

Economist Michael Greenstone studies the human cost of China’s pollution in the Huai River Valley.