«A full reading of Bernstein's email reveals an important point ---- his assertion that,
in the 1980s, we never denied the possible role of human
activity as a cause for climate
change, and he further makes clear that, at that point
in time, there was a great deal of uncertainty and lack of understanding of climate
change, even among leading scientists and experts,» said Keil, adding that today, Exxon «believes the risk of climate
change is clear, and
warrants action.»