Measuring GHG Emissions

On November 4, 2016, the most recent international treaty to reduce global greenhouse gas (GHG) emissions went into force; the goal is to limit the average global temperature rise below 2 C. Emissions can linger in the atmosphere for centuries after being produced and trap more heat from the sun. The average global temperature has already risen 0.87 C above pre-industrial levels according to a 2015 report from NASA; it has increased by more than 3 C in the Arctic and Antarctic regions. With t...