Business Times: A draft of the Intergovernmental Panel on Climate Change (IPCC) Synthesis report warns of "severe, pervasive and irreversible impacts for people, species and 27 ecosystems," unless action is taken, and taken soon.
To keep the temperature from rising above the two degrees threshold, net global emissions of carbon must drop 40-70% by 2050, hitting zero by the end of the century.
This will mean limiting carbon dioxide levels in the atmosphere to 450 parts per million (ppm) by 2100, according to...