News
- Materials Science
Molecular Memory: Carbon-nanotube device stores data in molecules
Scientists have created a memory device in which data are encoded in switching molecules called catenanes that are attached to a carbon nanotube.
- Physics
One-Atom Laser: Trapped atom shoots steady light beam
A single, ultracold cesium atom sandwiched between two mirrors yields the most orderly beam of laser light ever.
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Unfair Trade: Monkeys demand equitable exchanges
Researchers say they have shown for the first time that a nonhuman species—the brown capuchin monkey—has a sense of what's fair and what's not.
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Estrogen Shock: Mollusk gene rewrites history of sex hormone
Estrogen and similar hormones evolved much earlier than thought.
