Mitch Voit and the Wolverines made easy work of the visiting USC Trojans on Sunday, cruising to an 11-0 victory at Ann Arbor.

If, then, the lines of flint in the chalk are periodical growths, must not the periods be years Must not each line of flint with its covering of three or four feet of chalk be the product of one year?

Chalk is fun to draw with, and some people even get really good at using it to make art on the sidewalk. If you don’t like tediously developing such skills, though, you could go another route ...