Earth is running a fever. Atmospheric CO2 concentration now 397.54 ppm: http://1.usa.gov/ZyizbZ #NASA #climatechange pic.twitter.com/RzNiVWQe27
CARBON DIOXIDE CONCENTRATION
Earth is running a fever. Atmospheric CO2 concentration now 397.54 ppm: http://1.usa.gov/ZyizbZ #NASA #climatechange pic.twitter.com/RzNiVWQe27