In a video called “Smoking Teeth” on the International Academy of Oral Medicine and Toxicology’s website, a man takes an extracted tooth and rubs its 25-year-old amalgam filling with a pencil eraser. A phosphorescent screen in the background illuminates mercury offgassing — more than 1,000 times higher than what the Environmental Protection Agency allows for our air.
In the big picture, vultures are everywhere. They are comprised of two groups, Old World vultures and New World vultures. You can watch them fly almost anyplace except the colds of the Antarctic and, surprisingly, Australia, a continent that would seem well-suited for the birds.
The average pedestrian might not realize how wide Boulder’s sidewalks tend to be, and drivers might be annoyed at the barriers in the Goss Grove neighborhood that make 21st Street an impassable shortcut from Arapahoe Avenue to Canyon Boulevard.