Actually I'd bet the less and older population, the less people will even care about the environment at all because they don't have the excess productivity to worry about it.
Environmentalism is a luxury good that people think about when basic needs are met and requires capacity above that. It's going to be hard to care about coral reefs when we need to devote more of our scarce young people to the practical needs of a gerontocracy.
Environmentalism is a luxury good that people think about when basic needs are met and requires capacity above that. It's going to be hard to care about coral reefs when we need to devote more of our scarce young people to the practical needs of a gerontocracy.