Greenhouse gas emissions are a pressing issue for the world, but roadmaps to deal with emissions are far from clear. Photo: AFP

Trading carbon emissions is the El Dorado of climate-change management, a new market that will allow corporations to offset their presumed contribution to global warming and give governments a mechanism to balance economic and environmental interests. But carbon emissions are notoriously hard to measure, and the existing scorekeepers for emissions have run into withering criticism […]

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