Children around the world live in dire conditions without even the basic necessities of water, food, shelter, and love. They often suffer in silence, struggling just to exist among the unexplainable and irreversible conditions in which they find themselves. Many are so young that they do not know what they lack - the love of a family and the comfort of a home. Survival is their only concern. They grow up in a world of adults who seem to have forgotten them, or are so busy with their own survival that they really do not have time to care. These first-person narratives are compiled from...

Albert Michelson's Harmonic Analyzer celebrates a nineteenth century mechanical calculator that performed Fourier analysis by using gears, springs and levers to calculate with sines and cosines-an astonishing feat in an age before electronic computers. One hundred and fifty color photos reveal the analyzer's beauty though full-page spreads, lush close-ups of its components, and archival photos of other Michelson-inspired analyzers. The book includes sample output from the machine and a reproduction of an 1898 journal article by Michelson, which first detailed the analyzer. The book is...