David Suzuki and Stephen Lewis are hitting the road hoping to persuade young Canadians to make climate their No. 1 election issue.

The activists, along with musician Buffy Sainte-Marie, are embarking on a five-city speaking tour beginning on Saturday in Toronto.

Aside from one stop, they'll visit university campuses exclusively.

Lewis, a former leader of the Ontario NDP and diplomat, and Suzuki, a broadcaster with the CBC and environmentalist, spoke with CBC Metro Morning host Matt Galloway on Friday.