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Life span of the biosphere

Abstract

There has been life on Earth for at least 3,500 Myr but the assumption that a comparable future lies ahead may not be justified. Main sequence stars appear to increase their burning rate as they age. Thus the Sun, if a typical star, can be predicted to have increased its output by 30% since the Earth's origin 4,500 Myr ago1. The maintainance of an equable climate since life began probably required some means of planetary thermo-stasis. The Gaia hypothesis proposed by Lovelock and Margulis2 included an unspecified biological means for climate control. Walker et al.3 suggests an abiological automatic thermostasis in which the atmospheric abundance of CO2, a greenhouse gas, adjusts to resist the warming tendency of the increased solar flux. Here we discuss possible links between the biological and geological control mechanisms. It is clear that whatever the mechanism, atmospheric CO2 is now close to its lower limit of partial pressure, so the biosphere may soon, in geological terms, be exposed without protection to the predicted progressive increase of solar luminosity.

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References

  1. Newkirk, G. Jr. Geochim. cosmochim. Acta Suppl. 13, 293 (1980).

    CAS  Google Scholar 

  2. Lovelock, J. E. & Margulis, L. Tellus 26, 1 (1974).

    Article  ADS  Google Scholar 

  3. Walker, J. C. G., Hays, P. B. & Kasting, J. F. J. geophys. Res. (in the press).

  4. Owen, T., Cess, R. D. & Ramanathan, V. Nature 277, 640 (1979).

    Article  ADS  CAS  Google Scholar 

  5. Sagan, C. & Mullen, G. Science 177, 52 (1972).

    Article  ADS  CAS  Google Scholar 

  6. Henderson-Sellers, A. & Schwarz, A. Nature 287, 526 (1980).

    Article  ADS  CAS  Google Scholar 

  7. Wigley, T. M. L. & Brimblecombe, P. Nature 291, 213 (1981).

    Article  ADS  CAS  Google Scholar 

  8. Henderson-Sellers, A., Benlow, A. & Meadows, A. J. Q. Jl R. astr. Soc. 21, 74 (1980).

    ADS  CAS  Google Scholar 

  9. Brock, T. D. Science 158, 1012 (1967).

    Article  ADS  CAS  Google Scholar 

  10. Bolin, B., Degens, E. T., Kempe, S. & Ketner, P. The Global Carbon Cycle, SCOPE Rep. 13 (Wiley, New York, 1979).

    Google Scholar 

  11. Holland, H. D. The Chemistry of the Atmosphere and Oceans (Wiley, Chichester, 1978).

    Google Scholar 

  12. Baes, C. F. in Carbon Dioxide Review 1982 (ed. Clark, W. C.) (Institute of Energy Analysis, Oak Ridge Associated Universities, Tennessee, 1982).

    Google Scholar 

  13. Gough, D. in The Solar Output and its Variation (ed. White, O. R.) 451 (Colorado Associated University Press, 1977).

    Google Scholar 

  14. Steiner, J. & Grillmair, E. Bull. geol. Soc. Am. 84, 1003 (1973).

    Article  Google Scholar 

  15. Harland, W. B. & Herod, K. N. in Ice Ages Ancient and Modern (eds Wright, A. E. & Moseley, F.) (Seal House, Liverpool, 1975).

    Google Scholar 

  16. Henderson-Sellers, A. Nature 279, 786 (1979).

    Article  ADS  Google Scholar 

  17. Hart, M. H. Icarus 33, 23 (1978).

    Article  ADS  CAS  Google Scholar 

Download references

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Lovelock, J., Whitfield, M. Life span of the biosphere. Nature 296, 561–563 (1982). https://doi.org/10.1038/296561a0

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