Many scholars assert that "cap and trade" is an appropriate strategy for addressing climate change. Some economists have argued that auctions of greenhouse gases should be an integral part of any cap-and-trade mechanism. These economists suggest that auctions can efficiently distribute emissions...

It is still difficult for biofuel producers to prove the contribution of their biofuels to reducing carbon emissions because the production of biofuel feedstocks can cause land use change (LUC), which in turn causes carbon emissions. A carbon map can serve as a basis to proof such contribution....