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ChemistryMicrobes Make the Switch: Tailored bacteria need caffeine product to survive
Bacteria that rely on a chemical derived from the breakdown of caffeine for their survival could help lead to the development of decaffeinated coffee plants.
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PlantsGreen Red-Alert: Plant fights invaders with animal-like trick
Mustard plants' immune systems can react to traces of bacteria with a burst of nitric oxide, much as an animal's immune system does.
By Susan Milius -
PhysicsGraphite in Flatland: Carbon sheets may rival nanotubes
Researchers have created freestanding carbon films as thin as one atom.
By Peter Weiss -
Medical Decisions in Question: Mental incapacity missed by docs
A substantial minority of medical patients treated for acute conditions at a British hospital lacked the ability to make informed decisions about their care, although their physicians usually didn't recognize it.