Smart Cities Dive: 19 mayors commit to make all buildings net-zero carbon by 2050

Aug. 24 — The pledge was signed by the leaders of Copenhagen, Denmark; Johannesburg; London; Los Angeles; Montreal; New York City; Newburyport, MA; Paris; Portland, OR; San Francisco; San Jose, CA; Santa Monica, CA; Stockholm; Sydney; Tokyo; Toronto; Tshwane, South Africa; Vancouver and Washington, DC.

— Smart Cities Dive