Social attitudes can and should be changed by the addition of cogent information to situations where invisible costs have long been silently exported into the environment. Make the invisible visible. Don't sell warnings. The fact that we are living in an unprecedently old society, a society top-heavy with the aged, offers great opportunity. Long-term thinking is a useful and worthwhile effort well suited to the proclivities of old people.
Old people tend to be generous, they sometimes have time on their hands.
Electronically connected, garrulous oldsters might have a great deal to offer in the way of managing the copious unpaid scutwork of electronic civil society. We like the idea of being a radical art movement that specializes in recruiting the old. If environmental catastrophe strikes because of CO2 emissions, then organizations like the anti-Green Global Climate Coalition will be guilty of negligent genocide. Nobody has ever been guilty of this novel crime before, but if it happens, it will certainly be a crime of very great magnitude. At this moment, the GCC and their political and economic allies are, at best, engaged in a risky gamble with the lives of billions.