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.
The Earth Scientist, Volume XXIV, Issue 4, Fall/Winter 2008

$10.00
Articles in the Fall/Winter 2008 issue of The Earth Scientist include:
- Satellite Observations in Science Education, by Tommy Jasmin
-
Flying through Space: Developing Inquiry-Based
Astronomy Curriculum Using World Wide Telescope, by Lisa Dettloff -
Inspiring Students to Explore Science Careers on
Earth and in Space, by Meredith Manning -
Stellar Evolution: Cosmic Cycles of Formation
and Destruction, by Donna Young -
Southwest Astronomy 2008: An Arizona Field Adventure, by Ardis Herrold, Philip Becker, Tabby Eldredge, Linda Gardner,
Jack Hentz and Linda Malone - What is the Quality of Your Nighttime Sky? by Kirsten Meymaris, Dennis Ward and Sandra Henderson
- Google Sky in the Classroom, by Andrew Connolly,
Tina Ornduff and Lior Ron
Price: $10.00
