1. It’s a microbial world (And was and will be to the end)

2. 3 Domains of life ~4-6 x 10 30 cells ~350-550 Pg of C (1 Pg = 10 15 g) ~60% of all biomass

3. History of Earth http://web.mit.edu/12a34/www/home.html Indications of eukaryotic life

5. Seawater

6. Ice bacteria Ice images: Priscu research group, MSU

7. Soil bacteria

8. Hydrothermal vents http://www.cascadia.ctc.edu/facultyweb/instructors/jvanleer/

9. Subsurface biosphere

10. Space? http://www.astronomie.de/vds/astronomietag-2003/alh84001.jpg

11. Allen Hills Meteorite http://www-curator.jsc.nasa.gov/antmet/marsmets/alh84001/images/ALH84001,0-saw.jpg

12. What life is made of http://micro.magnet.fsu.edu/cells/procaryotes/images/procaryote.jpg CHNOPS Used to make: Lipids Proteins RNA DNA