Ithaca, N.Y., will require that 50% of the money spent on its energy transition and on major infrastructure projects is directed toward those residents most at risk from climate change.

Decarbonizing involves installing things from solar panels to switching out gas stoves for electric stoves. The effort to decarbonize buildings will cut the city's carbon dioxide output by 40%.

The president ran roughshod over debate moderator Chris Wallace and his Democratic opponent Joe Biden — and crossed many lines in the process.