Prince Charles recently visited a Mumbai shantytown and praised its "sustainability" in which residents recycle their waste and build their own homes out of whatever materials come to hand. There is of course a word for this form of "sustainability", it's called grinding poverty.
Charles is of course not the first rich European to romanticize poverty as some sort of higher spiritual principle. But it's easier to apply that brand of orientalism to India, to assume that people with brown skin who live in terrible poverty are more spiritual, rather than poor. Had Prince Charles gone back in time, he could have seen that same form of "sustainability" in London. But people do not recycle their wastes and use found objects as building materials because they are environmentalists, but because they have no choice. When posturing hipsters in the United States dig through trash cans for food, they're Freegans. But when people who have to dig through garbage cans for food do it, we call them impoverished.