400ppm, a milestone or a nail in our shared coffin? Thoughts on environment.
On May 9th 2013, the concentration of CO2 in the atmosphere atop Mauna Loa exceeded 400ppm for the first time since recording commenced in 1958. It was last at this level over 3 million years ago, before our wise human… Read More »400ppm, a milestone or a nail in our shared coffin? Thoughts on environment.