Tag College of Letters & Science
Curiosities: Why do sharks have to swim constantly?
For two reasons, says James Kitchell, professor of zoology at UW–Madison. First, sharks lack the swim bladder that most fish use to adjust their buoyancy.
Curiosities: What’s the difference between dishwasher detergent, laundry detergent and dish soap? Why aren’t they interchangeable?
All detergents — whether intended for hands, hair, clothes or dishes — work on the same principles: Break up oils and dirt and wash them…