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PlantsSunflower genes don’t fit pattern
Comparison between crop and wild sunflower genes suggests that the plant followed an easy route to domestication.
By Susan Milius -
Health & MedicineTracking signs of memory loss
A new imaging agent may allow researchers to detect the plaques characteristic of Alzheimer's disease before symptoms are present, when therapies may be most effective.
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PhysicsViolent chemistry saps sonobubble energy
In liquids agitated by sound waves, imploding gas bubbles get cooled when atoms recombine, making the bubbles unlikely nuclear reactors.
By Peter Weiss -
Earth2002’s tornado tally well below average
As of August 1, barely half the usual number of tornadoes had struck the lower 48 states of the United States.