Could San Francisco Get the Oil Industry to Pay for Climate Change?
By Wired,Oct. 19, 2017
WHEN A RAINDROP falls in San Francisco, it has two choices: flow east into the San Francisco Bay, or west into the Pacific Ocean. A ridgeline divides the city into two, slicing through the Presidio, hugging the eastern edge of Golden Gate Park, and skirting Twin Peaks. As the land drops off in either direction, the elevation difference doesn’t just drive raindrops downhill—it also moves human waste. San Francisco, unlike any other coastal city in California, has just one set of pipes for its storm runoff and sewage. First engineered more than a hundred years ago, the system still functions on the same basic principle as it did in 1890: Let gravity do the work.