New York Mayor Michael Bloomberg, New York Times columnist Thomas Friedman and political commentator Cokie Roberts are among those set to appear at Greenbuild in October.

The U.S. Green Building Council’s annual conference and expo takes place Oct. 4-7 in Toronto.

”Each year, we strive to build a program enriched with thoughtful pairings of expert speakers with topical, relevant and inspiring content," said Kimberly Lewis, vice president of events at the USGBC. "This year, as Greenbuild celebrates its 10-year anniversary and answers the question, 'What's next?' We look forward to hosting a roster of world-renowned visionaries."

Friedman will be the Oct. 5 keynote speaker, as well as participating in a panel moderated by Roberts, the former co-host of ABC News’ “This Week.”

Bloomberg will deliver the closing speech Oct. 7, discussing what cities can do to further environmental goals.

The full conference agenda is here.