WARRENSBURG, Mo. (AP) – Former President Bill Clinton challenged University of Central Missouri graduates Friday night to join his efforts to reduce energy production and consumption to prevent further global warming.

The two-term Democratic president also received an honorary doctorate degree during the school’s commencement ceremony for graduate students.

The Warrensburg university honored Clinton for his commitment to education and philanthropy as well as his service to the country. That includes his work through the William J. Clinton Foundation to promote worldwide health and economic development initiatives.

Clinton lauded the school’s $36 million effort to make campus buildings more energy efficient. He also praised the school’s planned National Energy Retrofit Institute, which plans to retrain displaced construction workers.

He spoke only briefly about the U.S. military operation that led to Osama bin Laden’s death.