On the Cover
May-June 2000 Volume 88, Number 3
Nanotechnology developed by engineers contrasts with the
bionanotechnology used in living cells: DNA strands are typical of
bionanotechnology, with unusual, organic shapes and complicated patterns
of interaction. A hypothetical bearing, shown wrapped around a DNA
strand, takes an engineering-inspired approach, with a rigid,
diamond-like lattice of atoms rolled into a perfect cylinder. ...
FEATURE ARTICLES
Alejandro Gangui
These relics from the early universe could be the answer to many astrophysical conundrums
David Goodsell
Evolution has forced innovative solutions to biomolecular problems. Some may inform the growing field of nanotechnology
Bruno Olshausen, David Field
The human brain may hold the secrets to the best image-compression algorithms
Thomas Overbye
Deregulation places new demands on one of the world's largest engineered structures—and presents new opportunities for educated consumers
Theodore Schurr
Genetic variations among Native Americans provide further clues to who first populated the Americas and when they arrived
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