During the week of May 13th, the CO2 level at the Mauna Loa Observatory in Hawaii topped 400 ppm repeatedly. Daily levels of CO2 can vary due to weather, and there are seasonal trends as well.
Past Field Trips
Thursday, March 29, 2012 - 1:00pm
Thursday, March 29, 2012 - 1:00pm
Wednesday, March 28, 2012
Wednesday, March 28, 2012
Wednesday, March 9, 2011 - 8:00am
Friday, April 30, 2010 - 8:00pm
Wednesday, March 26, 2008 - 8:00am
