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.
Oil Spill in the Gulf of Mexico
The recent tragedy in the Gulf of Mexico is one that everyone including our students is embracing. Visit this link to keep on top of this disaster as it unfolds and hopefully ends soon.
http://wsre.org/OilSpill/teachers-students-kids.asp
