You Asked Why are chimps so much stronger than humans? — Grafton, Pittsburgh, Pa. Marshall Answered It is true that chimps (and other primates) are stronger than human beings. For example, this article points out that, gram for gram, the muscle of a bonobo is twice as strong as a human muscle. This article discusses [...]

You Asked What is whitewash? What happens when you whitewash something? — Irena, Cary, NC Marshall Answered Whitewash is best known for its appearance in the book Tom Sawyer. In that case, Tom was painting a fence with it. Whitewash was used as a type of white paint. People whitewashed fences, barns, houses, etc. The [...]

You Asked When a dog licks you, is it a sign of affection? — Mary, Bemidji, Minn. Marshall Answered In order to understand dogs, you really need to look at this post, which definitively explains how humans created dogs from wolves: How did humans create cuddly pet dogs from wolves? So at the core, any dog [...]

You Asked How are bowling balls made? Doug, Calgary, Canada Marshall Answered Bowling balls are somewhat more complex than you might imagine. As described in the following video, they have a metal core, surrounded by resin, surrounded by polyurethane: For more info on the core of a bowling ball see: How It’s Made: Bowling Ball [...]