CEOs of fossil energy companies know what they are doing and are aware of long-term consequences of continued business as usual. In my opinion, these CEOs should be tried for high crimes against humanity [1] and nature.
Conviction of ExxonMobil and Peabody Coal CEOs will be no consolation, if we pass on a runaway climate to our children. Humanity would be impoverished by ravages of continually shifting shorelines and intensification of regional climate extremes.
Loss of countless species would leave a more desolate planet.
Links:
[1] http://www.columbia.edu/~jeh1/2008/TwentyYearsLater_20080623.pdf