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  1. Planetary Science

    Moonopolies

    Recently discovered tiny satellites, all orbiting the outer planets in strange paths, may shed new light on a critical last phase in the formation of the planets.

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  2. Math

    Cool Rationals

    It’s curious how some classroom words, activities, or incidents can stick in your mind for years. I can still recall certain grammar rules from lessons long past, for example. When one of these rules comes into play as I write, I can remember not only the teacher’s words but also the tone and manner in […]

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  3. Humans

    From the November 11, 1933, issue

    RARE BIRD COURTSHIP SHOWN BY NEW MUSEUM GROUP Romantic squires and young knights of the sunset days of feudalism paid court to the lovely ladies of their fancy in elaborately built bowers set in corners of the castle grounds. Even in these livelier days, when troubadours carry saxophones and steel guitars instead of plaintive lutes […]

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  4. 19284

    This article, implying the demise of the unique Mexico-Canada migration, seems too pessimistic. Monarchs have shown a great degree of adaptability. There are monarchs of the western United States, resident populations in Hawaii and on Caribbean islands, and a migrating population in Australia. I am betting that even if the weather forecast for 2050 is […]

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  5. Ecosystems

    Will Climate Change Depose Monarchs? Model predicts too-wet winter refuges

    A computer analysis suggests that eastern monarch butterflies may not be able to tolerate the increasingly moist climate in Mexico, their current wintering site.

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  6. Earth

    Not Just Neurotoxic: Pesticide chlorpyrifos affects heart and liver cells

    A pesticide known to be toxic to the brain may also have subtle effects on heart and liver tissues of animals exposed to this substance during early development.

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  7. Tech

    Plastic Memories: Polymer materials store data permanently

    Researchers have fabricated a memory device that stores data permanently in electrically-conducting polymers.

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  8. Whiffs of Perception: Sniffing activates the mind’s nose

    People spontaneously sniff while imagining various smells, an act that intensifies odor perception.

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  9. Physics

    Humpty-Dumpty Effect: Acoustically, people resemble large eggs

    The first measurements of how people intrinsically scatter sound waves indicate that, acoustically, a human body resembles a hard ellipsoid of the same height and girth as the person.

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  10. Paleontology

    Northern Extinction: Alaskan horses shrank, then disappeared

    Horses that lived in Alaska shrank dramatically in body size before they went extinct at the end of the last ice age.

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  11. Astronomy

    Sound of the fury

    On Oct. 28, the Saturn-bound Cassini spacecraft recorded the radio wave "sound" of a powerful solar flare as it raced toward Earth.

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  12. Astronomy

    Chow Down! Milky Way gobbles its closest known neighbor

    A tiny, newly discovered galaxy being shredded by the gravity of the Milky Way is our galaxy's closest known neighbor, residing just 42,000 light-years from the Milky Way's center.

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