Take a look at the links below for more on what's been going on in San Francisco on Wednesday.

BART will receive a $5 million federal grant to develop and test a new system that will automatically stop trains when there are workers on the tracks. (CBS)

This map shows where human waste is located around San Francisco. (Western Journalism)

SFMOMA's giant Richard Serra sculpture being installed on Howard Street is blocking traffic. (SFist)

Julie Christensen, S.F.'s newest supervisor, is ramping up pressure on Airbnb to pay about $25 million in back taxes owed to The City. (San Francisco Business Times)

The SF Housing Action Coalition has joined four other organizations to support the California State Lands Commission's lawsuit challenging the legality of Prop. B, the waterfront height limit initiative. (Beyond Chron)

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