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Cancer Stem Cells May Not Be the Supervillains We ThoughtThe controversial idea that all tumors are created by cancer stem cells received a setback Wednesday. The theory holds that a tiny percentage of cancer cells — perhaps one in a million or one in 10,000 — are responsible for creating tumors. Like evil relatives of standard organ-f... |
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Ancient Supernova Explosion Glimpsed AnewA supernova explosion first seen from Earth 436 years ago has come back to life for astronomers in a time-travel-like astronomical twist. By observing light from supernova SN 1572 that was slowed on its trip to Earth by dust particles, scientists can watch the outburst now as it would have ... |
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How to Use Neuroscience to Become Your AvatarResearch subjects fitted with goggles that stream video from cameras strapped to another person (or mannequin) can experience that body as their own, neuroscientists say. And not just in a fluffy, philosophical way: the subjects experienced measurable physiological changes, as reported in ... |
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Hacking Salmon's Mental Compass to Save Endangered FishOne of the animal kingdom's enduring mysteries — the sea-spanning return of salmon to their home stream — may be explained by in-brain GPS systems calibrated to Earth's magnetic field. Scientists hope to program the navigation systems of captive salmon to help the species surviv... |
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Monday Night: Planets Align in a FrownLook up at the sky Monday night to see a bright cosmic frown. The planets Jupiter and Venus will briefly align to form (nearly upside down) two eyes and a frowning mouth in the southwest. In what's called a planetary conjunction, the two planets —the brightest in the night sky — wi... |
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The First Aid: Iceman May Have Dressed His Own WoundsThe 5,000 year-old Tyrolean Iceman may have used bogmoss as a prehistoric wound dressing, according to a new analysis of his body's remains. Suffering from an arrow wound and a deep cut to the right hand, the Iceman, known as Ötzi', may have engaged in some ancient first aid using th... |
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