# Mathematical Digest

### Short Summaries of Articles about Mathematics

in the Popular Press

"Much Ado About Flapping," by Kathy A. Svitil. *Discover,* April2001.

Jun Zhang uses two-dimensional simulation to answer the question "Why do flagsflap in the wind?" and aims to use this technique to analyze similar phenomenasuch as swimming fish, blood flow and even snoring. Tony Phillips wrote aboutZhang et al's research in a "Letter to *Nature"* (December 14, 2000) in Math in theMedia (February 2001).

*--- Annette Emerson*