Did the Upper Great Highway closure make Sunset neighborhood streets less safe? Supervisor Alan Wong claimed it did at a January 8 press conference, citing a simple year-over-year map comparison of crash data. But my analysis, using the same DataSF crash data with rigorous statistical controls, finds no evidence to support that claim, and if anything, the data suggest the opposite.
Using the latest NASA data, physicists from the Olin College of Engineering found that there are 22,800 near-earth objects (NEOs) measuring 140 metres or larger. Assuming that an impact will kill one in 1,000 people, your odds of dying in a collision with a space rock are one in 156,000.