Today (Dec. 18), scientists with the space agency unveiled the first carbon maps ... carbon dioxide levels with a precision of about 1 part per million, or ppm. (Today's carbon concentration ...

One map reveals the human carbon dioxide emissions over Europe ... 278ppm before the Industrial Revolution, a concentration which the e World Meteorological Organisation said represented a ...

The concentration of carbon dioxide (CO2 ... China, the world’s biggest greenhouse gas emitter, on Sunday unveiled its climate road map without improving on its pledge to cut emissions.