1) Carbon finance 
A carbon offset is a reduction in emissions of carbon dioxide or greenhouse gases made in order to compensate for or to offset an emission made elsewhere. Carbon offsets are measured in metric tons of carbon dioxide-equivalent (CO2e) and may represent six primary categories of greenhouse gases: carbon dioxide (CO2), methane (CH4), nitrous oxide (N...
the production or purchase of a carbon credit intended to cancel out the effect of the purchaser's emissions
The process of voluntarily offsetting carbon emissions by, for example, planting trees, investing in renewable energy.
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a mechanism for individuals and businesses to neutralize rather than actually reduce their greenhouse gas emissions, by purchasing the right to claim someone else's reductions as their own.
A carbon offset negates the overall amount of carbon released into the atmosphere by avoiding the release or removing it elsewhere â€` eg through a renewable energy or energy conservation project. Voluntary carbon offsetting schemes can can help people reduce their carbon footprint, but should only be used as a last resort. It is also important ...
A financial donation or other act that aims to remove a certain amount of carbon dioxide from the atmosphere, to compensate for another carbon dioxide emitting activity, e.g. a flight.