Save Species to Eat Them

The creativity behind social marketing can be alarming. A recent television ad depicted water disappearing into a storm drain as a voice warned that lawn fertilizer in the spring can wind up in the Chesapeake Bay. "No crab should die like this," the announcer opines. Later, the announcer appears on screen with a small tub in hand, exclaiming "they should perish in some hot, tasty melted butter!" This promotion by the Chesapeake Bay Program, a subsidiary of the U.S. Environmental Protection Ag...

 Transforming Species Through Mathematics

In 1917 the great Scottish zoologist D'Arcy Thompson wrote a book called On Growth and Form, in the last chapter of which he introduced his famous 'method of transformations'. * He would draw an animal on graph paper, and then he would distort the graph paper in a mathematically specifiable way and show that the form of the original animal had turned into another, related animal. You could think of the original graph paper as a piece of rubber, on which you draw your first animal. Then the tr...