who has found an intriguing mathematical connection between: 1) how the skin cells of a frog decide whether or not to grow hair; and, 2) how to create a new system of air-traffic control so that planes can fly closer together. She is interested in the first question because she believes it will help us find an answer to the second, which will let us understand air traffic, and prevent accidents in our increasingly crowded skies." see also : Claire Tomlin's homepage. Why is that so many science geeks seem to think that putting zipped post-script versions of their papers online is somehow a good, and proper, use of the web?