The transportation sector, as one of the largest and fastest growing sources of greenhouse gas (GHG) emissions, is becoming a major policy focus for addressing climate change. (transportation.gov)
And we're still, because we're burning so much carbon in our car engines, transport's also the fastest growing source of greenhouse gases, of course. (calcars.org)
The global initiative was a first attempt to halt carbon emissions from air travel — one of the fastest growing sources of climate pollution. (theguardian.com)