 PRINT EDITION -- FEBRUARY 2006
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 - Free preview. Full coverage is available at Scientific American Digital
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FEATURES
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ENGINEERING
Protecting New Orleans
As reconstruction begins on the hurricane-ravaged Gulf Coast, engineers contemplate how to protect New Orleans and other cities against fierce future storms and rising sea levels
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INFORMATION TECHNOLOGY AND IMAGING
Putting a Face on the First President
The middle-aged George Washington's picture is as close as the nearest dollar bill, but no surviving portraits show him as a young man. A forensic anthropologist uses computers to depict him
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INNOVATIONS
Miniaturized Power
With nanobatteries, power sources finally start to shrink with the rest of electronics
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BIOTECHNOLOGY AND THE LAW
Owning the Stuff of Life
Patents on DNA have not caused the severe disruptions of biomedical research and societal norms anticipated by critics. But the deluge may be yet to come
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PHYSICS
Plasma Accelerators
A new type of particle accelerator, compact enough to fit on a tabletop, should cut the size and expense of colliders and unleash a wealth of lower-energy applications
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IMMUNOLOGY
Intrigue at the Immune Synapse
When cells of the immune system converse, they communicate through short-lived structures surprisingly like those between neurons in the nervous system
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DEFENSE
Thwarting Nuclear Terrorism
Many civilian research reactors contain highly enriched uranium that terrorists could use to build nuclear bombs. More must be done to contain this threat
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Winner Takes All
