"Earth's CO2 Home Page" http://co2now.org/
387.18 CO2 ppm when this site was created, October 2010, measured at Mauna Loa Observatory, NOAA-ESRL.
What the world needs to watch
Global warming is mainly the result of CO2 levels rising in the Earth’s atmosphere. Both atmospheric CO2 and climate change are accelerating. Climate scientists say we have years, not decades, to stabilize CO2 and other greenhouse gases.
To help the world succeed, CO2Now.org makes it easy to see the most current CO2 level and what it means. So, use this site and keep an eye on CO2. Invite others to do the same. Then we can do more to send CO2 in the right direction.
