More on Vitamin D’s Health Benefits

Lynne Kiesling Courtesy of Glenn Reynolds, an article from Patrick Cox on the health benefits of Vitamin D, which complements my earlier post on the subject. He makes a point that I had not made explicit: in doing the relative risk assessment of sun exposure and wearing sunscreen, there is some evidence suggesting that higher … More More on Vitamin D’s Health Benefits

Snow and Led Traffic Lights

Lynne Kiesling The snowy weather across much of the northern hemisphere this week is being disruptive in many ways. At the Freakonomics blog, Eric Morris highlights one unanticipated and unintended disruption — snow obscuring energy-efficient LED traffic lights: The biggest weakness of LEDs is their biggest strength – they don’t radiate much heat. What on … More Snow and Led Traffic Lights