CTV: As the federal election gets underway, one group expects the carbon trail left behind could speak volumes to environmentally-aware Canadians. The David Suzuki Foundation, in partnership with CTV’s Canada AM will be tracking the emissions generated as the Conservative, Liberal and NDP leaders travel by plane, bus and train across the country. Dale Marshall, a climate change policy analyst with the David Suzuki Foundation, told CTV’s Canada AM it’s relatively easy to do the …