Thomas Hertel

A U.S. Department of Commerce document lists Purdue University research as a source for recommending a 24 percent tariff on imported steel.

When Purdue agricultural economics professor Thomas Hertel first saw the Trump Administration’s math, he had to check for himself.

“We quickly re-ran that experiment here and we get the same outcome,” says Hertel.

He created the Global Trade Analysis Project Model, referred to as GTAP, 25 years ago. The free database runs analyses on the impacts of tariffs and today has more than 17,000 users in 170 countries.

New research from Purdue University finds that climate change could have far more adverse impacts on agriculture than originally thought.

The study provides a new “social cost of carbon.” State and federal agencies often use the metric to determine the damage additional carbon dioxide released to the atmosphere will have on society and the economy.