PRINCETON, N.J. (AP) -- Former Vice President Al Gore is praising the Obama administration's plan to cut carbon dioxide emissions from power plants over the next 15 years.
Gore, a leading advocate on climate issues, spoke Monday in New Jersey at Princeton University's Class Day, a mostly whimsical celebration the day before the Ivy League school's commencement ceremony.
He tells students that the proposed rule that would require power plants to reduce their emissions nearly a third is significant because it establishes the "moral authority" of the U.S. on climate change issues.
Gore, who has been mocked as dull, joked that he fit right in with a list of past Class Day speakers including Bill Cosby, John Stewart and Stephen Colbert.
He was selected for his role in making climate change a mainstream issue.