Climate scientists have raised concerns that the latest report from the U.N. Intergovernmental Panel on Climate Change is "too conservative," referring to its lowered projections on the range of future warming based on a slight lack of temperature increase over the last decade. Despite this possibly encouraging bit of news, the IPCC's fifth major assessment continues to report unequivocal warming due to human causes.

Earlier this year a new ordinance requiring energy audits for existing commercial buildings in San Francisco went into effect. The audits identify upgrades a property owner can make to improve overall building efficiency. So far, the first 195 building audits have identified 32 gigawatt-hours of potential annual energy savings, with a value of $6 million. With thousands more audits slated to happen over the next two years, what kind of savings might we expect to see from this simple reporting requirement?

One of the biggest challenges urban farmers face is access to land. Signed into law on September 28, the Urban Agriculture Incentive Zones Act — introduced by Assembly Member Phil Ting and supported by more than 25 organizations across the state — will increase the use of privately owned, vacant land for urban agriculture and improve land security for urban ag projects.

This article is an exploration into the many urban water management challenges and solutions.