…forests absorb roughly 7.6 billion metric tonnes of carbon dioxide every year—double what they emit. That number hides some worrying trends. In Canada, logging and wildfires flipped Canadian forests from a net carbon reservoir to a net source about 25 years ago, according to the federal government. British Columbia responded by launching one of the world’s first large-scale projects designed to generate revenue for local communities by not logging old-growth forests. The model, which began in the Great Bear Rainforest in 2009 … created market value by putting a price on carbon locked in and absorbed by trees. …Cheakamus Community Forest forest raised $600,000 in forest carbon offsets in a single sale to a mining company… But while Cheakamus celebrates rising demand and higher prices, Gary Bull, a professor emeritus of forestry at the University of British Columbia, said B.C.’s decision to regulate the carbon market has made it nearly impossible for others to take part.