When Kyle Stone tries to explain his work, he sometimes compares it to keeping track of cows in a field. His job is to make sure there are enough cows in the pasture to keep it from getting overgrown, but not too many, so there’s enough grass to go around. Except his cows are tiny aquatic creatures called brine shrimp, they eat algae instead of grass, and there are about 17 trillion of them. The brine shrimp are grazing crustaceans, surviving on a diet of algae that grows in Utah’s…
