Throughout history, people have bathed in public rather than in private. Should we bring back the public bathhouse for the sake of sustainability?
Can we make modern health care carbon-neutral and maintain the levels of care, pain relief, and longevity that we have come to take for granted?
Those who can overcome their vanity can revert to technology that has proven to work.
Flushing the water closet wreaks ecological havoc, deprives agricultural soils of essential nutrients and makes food production dependent on fossil fuels.
What will remain of greentech, cleantech and ecotech if nanotechnology turns out to be harmful for humans and the environment?