Day: May 29, 2014

Carbon Emissions Climate Global Warming News

CO2 Levels Reach and Maintain 400 PPM – A Dubious

The World Meteorological Organization reports that, for the first time in human history, atmospheric concentrations of carbon dioxide (CO2) eclipsed 400 parts-per-million (ppm) in the northern hemisphere for the entire month of April.CO2 concentration varies with the seasons, generally reaching their highest level early in the northern hemisphere’s spring before seasonal intake of CO2 from vegetation. The […]Read More