> Start by implementing a odd/even rule for license plates in big cities Then rich people just buy two cars. This increases carbon emissions. Also, people are

> Start by implementing a odd/even rule for license plates in big cities Then rich people just buy two cars. This increases carbon emissions. Also, people are pissed off, so the government loses the next election. > Tax and/or de-subsidize the meat industry The way to go would be to tax carbon emissions, and lay down a timetable where they taxes will get larger over time; then everyone has big incentives to change behaviour.