he San Francisco Board of Education voted unanimously Tuesday night in favor of a plan to achieve carbon neutrality — the phasing out of fossil fuel use entirely — by 2040. Board officials say the San Francisco Unified School District now has in place the nation’s most aggressive carbon reduction goal of its kind.

“The old mantra of sustainability is, ‘How can we be more efficient? How can we be slightly better?’ ” says Nik Kaestner, the district’s sustainability director. “The new mantra is, ‘How can we get to zero? How can we do it in a way that, in the end, we won’t have anything else to improve upon?” Read More…