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EarthPrescribed fire burns out of control
A fire set by the National Park Service to clear underbrush burned out of control, consuming more than 44,000 acres around Los Alamos, N.M.
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Grade-Schoolers Grow into Sleep Loss
By the sixth grade, many middle-class children may experience substantial sleep deprivation that has the potential to interfere with their ability to learn and pay attention.
By Bruce Bower -
PhysicsMotor design flouts physical law
A proposed silicon device the size of a red blood cell would transform random thermal motion into useful mechanical power in violation of the second law of thermodynamics, its designers claim.
By Peter Weiss -
Materials ScienceKnitting with nanotubes
Researchers can draw fine yarns of carbon nanotubes from a reservoir of the microscopic cylinders.