It's official. Obesity is caused by too many calories. Here is the NBER study. It's not urban sprawl of global warming.
But dumb ideas do not go away easily. This morning's LA Times includes the latest installment of the "subway to the sea" discussion about extending the Red Line west to the beach (but not yet beyond). The existing Red Line is about 16-miles of guideway that cost $4.7 billion to build, serves just 115,000 riders per day and costs $78 million a year to operate (the last time I looked). I have reported many times that this amounts to a $323 million/year loss -- which shrinks to $286 million/year if the most optimistic non-rider benefit assumptions (reduced auto use) are added.
These details are never addressed in the discussion of whether to spend another $6 billion on the 6-7 mile extension. The Times' coverage does mention that current daily bus boardings along the route are 64,300 (or 34,900, depending on the alignment chosen). It also mentions that costs on the currently-under-construction "Expo" light-rail line are running 23% above budget.
When pork meets green, anything goes.