The last time a startup programmer taught a homeless man to code, the naive vanity project failed. A few engineering lessons failed to solve socioeconomic realities and the man was still sleeping in the streets eight months later. But Twitter has higher hopes for its new "learning center" where employees can "teach tech skills" to San Francisco's homeless.

That squeezed out feeling San Francisco residents have been complaining about isn't just psychosomatic. A new study shows that evictions—especially ones where units are taken off the rental market—have "skyrocketed," reports the San Francisco Chronicle.