State of play: San Francisco aims to cut emissions 61% below 1990 levels by 2030 and become carbon-neutral by 2040. Zoom out: Nationally, the EPA data showed 62% of metro areas improved their air ...

Perhaps not until 2040, he says. Not all cities will be hit equally. Those with the lowest occupancy rates and highest costs—we’re looking at you, New York and San Francisco—will be affected ...