In 1989, Tyler Volk and Dave Schwartzman showed convincingly that the rock weathering rate increased by three orders of magnitude in the presence of life compared to the lifeless case. Gaian proponents viewed this as a major piece of supporting evidence in their contention that CO2 effects on climate, known to be very powerful, could be significantly affected, even controlled, by the biologically enhanced rate of weathering. Lovelock has said of their work ''This is much more than is needed to enable a powerful physiological regulation of climate and carbon dioxide. We think it could account for the 300-fold decline in carbon dioxide since life began on Earth.''
Was this article helpful?