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  1. Chemistry

    Packaging Peril: Chemicals in food wrapping turn toxic

    Chemicals that prevent grease from seeping through food packaging can transform into a suspected carcinogen.

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  2. Health & Medicine

    Visualizing Cancer: Images of tumors can detect gene expression

    Subtle features in X-ray images of tumors let radiologists infer which genes are active in the cancerous growth.

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  3. Animals

    Pothole Pals: Ants pave roads for fellow raiders

    By throwing their bodies into tiny potholes on rough trails, army ants enable their comrade to race over them, improving the colony's overall foraging success.

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  4. Health & Medicine

    Early Start: Fetuses generate immune response to vaccination

    A fetus can manufacture immune cells and antibodies in direct response to vaccine given to the mother during pregnancy.

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  5. 19839

    Rather than concluding that the object that hit Canada 12,900 years ago was a comet, I wonder whether there might not be an alternate reason that geologists haven’t discovered a large hole. If a meteor hit a kilometer-thick glacier, would it have left a crater in the rock underneath the ice? Peter ShorWellesley, Mass. Scientists […]

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  6. Earth

    Ice Age Ends Smashingly: Did a comet blow up over eastern Canada?

    An extraterrestrial object apparently exploded above Canada about 12,900 years ago, sparking devastating wildfires and triggering a millennium-long cold spell.

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  7. Math

    Trisecting an Angle with Origami

    A paper-folding technique can solve a classic math problem.

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  8. Humans

    Letters from the June 2, 2007, issue of Science News

    Where there’s fire Regarding “Risky Flames: Firefighter coronaries spike during blazes” (SN: 3/24/07, p. 180), was the increased death rate due to firefighters having a higher rate of heart disease than people do in other jobs? An analysis of eating habits may reveal more insight. Jim SchmitzSt. Louis, Mo. The study looked only at what […]

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  9. Earth

    Using seismometers to monitor glaciers

    Seismic instruments could be used to estimate the amount of ice that shears away from glaciers as they flow into the sea, offering a way to better estimate sea level rise due to the breakup of those ice masses.

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  10. Physics

    Carbon’s mysterious magnetism

    An X-ray experiment has yielded the most conclusive evidence to date that carbon can be magnetic.

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  11. Planetary Science

    Powering Enceladus’ plumes

    The action of Saturn's gravity is responsible for plumes of water vapor shooting out from cracks on the moon Enceladus.

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  12. Health & Medicine

    Stem cells not required

    Insulin-producing cells in the pancreas proliferate by cell division, unlike other body tissues, which regenerate from adult stem cells.

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