On May 9 2013, ever known for the first time in the history of earth, the CO2 concentration in our atmosphere was recorded to be 400 ppm (parts per million).
With increase in the carbon concentration in our atmosphere, It is a question of survival for our generation. So all of us need to act before its too late!.
Plant Tress, Thats the finest way for contributing mother Earth.
350 parts per million is what many scientists, climate experts, and progressive national governments are now saying is the safe upper limit for CO2 in our atmosphere. – www.350.org
For more Details visit: 400.350.org