<< formalised scientifically in the Gaia Hypothesis. >> A scientific hypothesis should be open to falsification (that is, disproof). How would you go about disproving the Gaia notion? Roger - - - - - - - - - - - - - - Roger Whitehead, 14 Amy Road, Oxted, Surrey RH8 0PX, England Tel: +44 (0)1883 713074; Fax: +44 (0)1883 716793 .