This is a independent look at the concept of Gaia as a tightly coupled
system, whose constituents are the biota and the physical environment
. Within the system the biota, through normal mechanisms of evolution,
unwittingly help regulate the environment within the bounds necessary
for their survival. The example of maintaining a broad equilibrium of
planetary transpiration is given. Some have given Gaia religious or p
oetical attributes, others see the concept as an intellectual tool whi
ch contributes to understanding of the relationship between animate an
d inanimate nature.