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					                     Lif e


Schishuney / fishing place with a pole / Waldron Island
                 Dusk o’ June, MMIX


                   Jelte Harnmeijer


   Center for Astrobiology & Early Earth Evolution
             University of Washington /
   National Aeronautical and Space Administration
     - Gratitude in a Word -




“Dhanje-bhat”
- Science | Religion, Truth & Method -
- Space, Time & Consciousness -
- Geological Time -
- The Birth of our Home, Earth -
                    - The Oldest Rocks -




(A) Isua (3.8 Ga)     (B) Pilbara (3.5 Ga)   (C) Barberton (3.5 Ga)
      - And what of Life? -




you
-Entropy –
- Organization –
- Order –
- Complexity –
-The Second Law of Thermodynamics –


“Entropy in the Universe always increases”

                  dS
                                   0
                  dt
             dS    is the incremental change in Entropy


             dt    is the incremental change in time
            - Life is a Struggle against Entropy –




Low Entropy                                   High Entropy


Nutrients                                     Waste products
            - Life is a Struggle against Entropy –




Low Entropy                                   High Entropy


Nutrients                                     Waste products
- Death –
                  - Isotopes –
                Example: Carbon
          12C                     13C




‘light’
                                        ‘heavy’
                    proton
                    neutron

      Negative δ13C = mostly ‘light’ carbon
      Positive δ13C = mostly ‘heavy’ carbon
       - Biosynthesis –




CO2 + H2O -> O2 + CH2O
- Let’s get back to the rocks! –
- Australia –
- Australia –
- Australia –
- Australia –




                2003 biomarker sample
     10 km
                2004 biomarker sample
- Greenland –
- Greenland –
- Greenland –
- Greenland –
- Carbon Isotopes –
- An Unexpected Surprise –
- An Unexpected Surprise –
- Fossils (!) –
- Fossils (!) –
- Please stay in touch -




 {e-mail} Jelte.Harnmeijer @ gmail.com
  {blog}    http://www.realfuture.org

				
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