In Toronto, Richard Blackwell meets Ron Dembo, whose Zerofootprint has shot to prominence as the offset broker for Air Canada. He is passionate about planting trees – even if others consider it a waste of time.

The Globe and Mail: Richard Blackwell

Flyers who book online or with regional carrier can calculate emissions then offset with cash as airline joins global trend

Toronto Star: Chris Sorensen

Globe and Mail: Heidi Sopinka

Globe and Mail: Brent Jang

Yahoo! Finance

CBC

CBC

TreeHugger: Lloyd Alter

Environmental Leader