A new study says that 71 drivers in Chicago cross a structurally defective bridge every second. [More]
Finally! It’s been so long since we’ve posted about anything tainted with lead that we were starting to wonder if all the world’s trade problems had been resolved—but now comes a new study that found 210 parts per million (ppm) of lead in the porcelain veneer of a dental crown ordered from China. That’s a lot less than the CPSC’s current 600 ppm threshold, but a lot more than the international standard of only 90 ppm. The good news is it’s highly unlikely developing children will need a mouth full of crowns and bridges. The bad news is it’s yet another example of how hazardous material can slip undiscovered into the marketplace—and your mouth.