Imagine an equilateral triangle. Now, imagine smaller equilateral triangles perched in the center of each side of the original triangle—you have a Star of David. Now, place still smaller equilateral triangles in the center of each of the star's 12 sides. Repeat this process infinitely and you have a Koch snowflake, a mind-bending geometric figure with an infinitely large perimeter, yet with a finite area. This is an example of the kind of mathematical puzzles that this book addresses.

The Fractal Geometry of Natureis a mathematics text. But buried in the deltas and lambdas and integrals, even a layperson can pick out and appreciate Mandelbrot's point: that somewhere in mathematics, there is an explanation for nature. It is not a coincidence that fractal math is so good at generating images of cliffs and shorelines and capillary beds.

A fool and his money are soon parted, so the saying goes. And if the job is done right, the fool doesn't even realize it's happened until the wily con artist has moved on to the next victim or the next town. In this entertaining and eye-opening book, Dennis M. Marlock, a retired cop and chairman of the board for the international law enforcement organization Professionals Against Confidence Crime, takes the reader into the mind and greedy heart of the con man. You'll learn the mechanics behind famous swindles such as the pigeon drop, the Jamaican switch, bank-examiner schemes, three-card monte and even fortune-telling. You'll find out why a good scam artist rarely gets caught and, if he does, how he gets away with the lightest punishment or no punishment at all. If you've ever read a news story about a sucker getting taken and wondered how he could have fallen for that, you need to read this book before an honest-faced stranger offers you a deal too good to pass up.

In the history of electronic communication, the last quarter of the nineteenth century holds a special place, for it was during this period that the telephone, phonograph, electric light, wireless, and cinema were all invented. In When old Technologies Were New, Carolyn Marvin explores how

two of these new inventions—the telephone and the electric light—were publicly envisioned at the end of the nineteenth century, as seen in specialized engineering journals and popular media. Marvin pays particular attention to the telephone, describing how it disrupted established social

relations, unsettling customary ways of dividing the private person and family from the more public setting of the community. On the lighter side, she describes how people spoke louder when calling long distance, and how they worried about catching contagious diseases over the phone. A particularly

powerful chapter deals with telephonic precursors of radio broadcasting—the "Telephone Herald" in New York and the "Telefon Hirmondo" of Hungary—and the conflict between the technological development of broadcasting and the attempt to impose a homogenous, ethnocentric variant of Anglo-Saxon

culture on the public. While focusing on the way professionals in the electronics field tried to control the new media, Marvin also illuminates the broader social impact, presenting a wide-ranging, informative, and entertaining account of the early years of electronic media.