Each of us can make a difference if we step up and try our best / Becoming Planet Citizens
No Going Back
Carbon dioxide levels cross 400 ppm threshold, highest in millions of years
- Concentrations of greenhouse gases in the atmosphere have reached this level for the first time in millions of years. What does this portend?
- As the US House Committee on Science disagrees with climate science consensus, NASA’s chief climate scientist, Gavin Schmidt, is not optimistic:
- “In my opinion, we won’t ever see a month below 400 ppm.”
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