CO2 Levels At 400 ppm

Environmental News Service:

For the first time, monthly concentrations of carbon dioxide (CO2) in the atmosphere topped 400 parts per million in April throughout the Northern Hemisphere, the World Meteorological Organization (WMO) reports.

This threshold is reinforces evidence that the burning of fossil fuels and other human activities are responsible for the continuing increase in heat-trapping greenhouse gases warming the planet said the WMO.
 Curt Carnemark / World Bank)

 Curt Carnemark / World Bank)

Severely altered an atmosphere, we has. How embarrassing. How embarrassing.