“We came all this way to explore the moon, and the most important thing is that we discovered the Earth.” Bill Anders
In the mid-1960s atmospheric physicists and modellers began to produce studies of how the atmosphere would respond to elevated levels of CO2. But still, they considered the greenhouse effect as a geophysical experiment, and the rise of CO2, as a changing parameter in the general problem of atmospheric thermal equilibrium. Meanwhile, diverse and competitive hypotheses had an influence on scientists’ view and generated disputes between those who adopted warming and those who backed cooling theories, although the number of scientists who considered the possibility of cooling was very limited. Scientific controversies and disputes between experts provoked major difficulties for decision-making and policy implementation. The situation was illustrated very well to a 1968 Time magazine essay, titled ‘The Age of Effluence’.