Starting with the negotiations leading to the Kyoto Protocol climate treaty in 1997, it has promoted the idea that
lingering uncertainties in climate science justify delaying restrictions on emissions of carbon dioxide and other heat - trapping smokestack and tailpipe gases.
For the next decade — as the emerging
science was becoming increasingly robust, and as international efforts to curb heat - trapping emissions gained steam and calls for action grew more urgent — the company persisted
in emphasizing the
lingering uncertainties of
climate science and the costs of ambitious policies, the documents show.