Hertzberg wants a carbon tax to fund entitlements:
By all means let’s have a stiff carbon tax—a whole carbon-tax package, one that folds in levies on other pollutants and on the wasteful or dangerous use of natural resources in general. And, at the same time, let’s make the carbon tax the source of the [Social Security and Medicare] trust fund. Call it the Dignity for Seniors tax, because that’s what it would provide. Or the National Patrimony tax, because that’s what it would preserve. Or the Social and National Security tax, because it would underwrite both kinds.
Kolbert and Frum also recently advocated for a carbon tax.