CO2
How Americans Feel About Climate Change
Are you alarmed, concerned, or disengaged?
When's the Last Time Our CO2 Levels Were This High?
Global atmospheric CO2 is now above 400 ppm. That's uncharted territory for humans—but not for Earth.
Are you alarmed, concerned, or disengaged?
Global atmospheric CO2 is now above 400 ppm. That's uncharted territory for humans—but not for Earth.