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tubes construct logic
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Carbon
nanotubes aren't likely to replace silicon
in computer chips anytime soon, but logic
circuits fashioned out of the single-molecule
tubes are a step toward giving microscopic
machines a little brainpower. They could also
lead to better biological and chemical sensors.
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Mobile
radios make intranet
Making your refrigerator an Internet node is a piece
of cake compared to turning a bunch of handheld
radios into a data network. Such mobile radio networks
could keep firefighters and soldiers online in the
field.
Quantum
code splits secrets
Write a message on a piece of paper, tear it in
two and give the pieces to a couple of friends.
Neither can read the message until they come together.
A quantum mechanical twist on this idea of secret
sharing could strengthen more sophisticated versions
of the scheme.
Computer
tells convincing story
We're happy to have computers do a lot of mundane
chores for us, but we get a little uneasy when some
of them start beating chess grandmasters. How will
it make us feel to have computers write our children's
bedtime stories?
Virtual
beings boost evolutionary theory
A computer model shows that he who reproduces fastest
doesn't always help his team win the game of evolution.
The key is how fast the organisms mutate. Better
strategies for making software that evolves could
be one consequence.
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