The "15-minute City" is an urban planning concept where your main daily needs are a close walk, bike or transit ride from home. It could also help limit global warming, but it faces major obstacles.
A planned community set to rise in a suburb near Salt Lake City could feature a network of shared mobility hubs and walking trails — plus tens of thousands of parking spots.
The simplest way to reduce transportation emissions is making it easier to not drive. And even in places where you have to drive, small changes can make a large difference.