SOURCE: Shell Oil
DATE: 1991
SNIP: “Our energy consuming way of life may be causing climatic changes with adverse consequences for us all.
…
These models contain many uncertainties but they forecast that by 2050, global mean temperature could have increased by a degree and a half, possibly nearer four. This may not sound like much, but what the computer modelers are looking at is the possibility of change at a rate faster than at any time since the end of the ice age – change too fast perhaps for life to adapt, without severe dislocation“.