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Contents
- Sweet Confusion: Does high fructose corn syrup deserve such a bad rap?
- Closed Thinking: Without scientific competition and open debate, much psychology research goes nowhere
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Contents
- Teens take home science gold: A low-cost, self-driving vehicle; battery alternatives and analyses of galaxy clusters claim top prizes at a global high school science competition
- Flagging loose bolts: “Smart alert washer” automatically flags when a nut is coming loose, warning of potential danger
- Pee is for power: The water in urine can be a source of hydrogen for electrical generators
Pollutant particles tiny enough to be inhaled deeply into the lungs, typically PM-2.5 and smaller, can’t be seen with the naked eye but collectively can contribute to hazy skies. The particles can grow in size as they collide and stick to others or become jacketed with other airborne chemicals. Smaller particles can ride air currents for days to weeks, traveling far — until washed out by rains.
Credit: Courtesy of EPA Office of Research and Development; modified by A. Nandy
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Eruption early in human prehistory may have been more whimper than bang
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Greed may breed financial fitness, but evolution allows unselfishness to survive
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Fine-tuning of technique used in other animals could enable personalized medicine
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Simulation suggests long-term effect on sea level not as dire as some predictions
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Coverage of the 2013 American Association for the Advancement of Science meeting
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The Year in Science 2012
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Three-part series on the scientific struggle to explain the conscious self
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Tables of contents, columns and FAQs on SN Prime for iPad
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