San Francisco and Singapore are spearheading urban waste management with Zero Waste strategies. In Singapore, the Pneumatic Waste Conveyance System streamlines waste transport underground, reducing pollution. San Francisco mandates design for waste diversion with smart bins and educational programs. These initiatives aim to foster circular economies and efficient resource use, creating sustainable urban environments.

Source:  https://www.archdaily.com/1021366/zero-waste-cities-urban-strategies-from-san-francisco-and-singapore