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Ethiopia lies close to the northernmost limit of the Intertropical Convergence Zone, where even a slight weakening in the strength of the monsoon may lead to rainfall failure. Being located on this sensitive climatic boundary explains in part why the country has such a long and infamous history of drought and famine. Understanding the past variability in the strength of the monsoon is critical to enable the validation of climate forecasting mo...

This outstanding collection of essays - authored by eminent scientists and science educators, including Bruce Alberts, Howard Gardner, Margaret Geller, Stephen Jay Gould, George A. Keyworth, Lawrence M. Krauss, Leon Lederman, Sheila Tobias, and James Trefil - provides suggestions for enhancing science education in the United States and improving the standards of scientific literacy throughout the world.Unfortunately, our educational system is ...

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Bill Moore already has a lot, but he wants more . . . much more.He's got a lucrative job selling condos in the Florida Keys, a good marriage, a beautiful house . . . and a five-year plan for super-success that he's just kicked into high gear.Then one morning he arrives at work to find a card waitingfor him with a one-word message:ModifiedAnd Bill's life begins to change—small, barely detectabledifferences at first, but soon things begin unwind...