Well, now...this is interesting: James Hansen,
on the payroll of left-wing billionaires.

If we can question the science of climate scientists solely on the basis of whether they accepted research money from Exxon or another corporation, on the grounds that that money comes with an agenda attached which irremediably taints any of their findings (at least, if they don't support AGW crisismongering), is it legitimate to question whether money given to other climate scientists by far-left organizations likewise comes with an agenda attached?