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  1. Anthropology

    Prehistoric Family Split: DNA puts Neandertals on edge of human ancestry

    The largest sample of ancient mitochondrial DNA extracted from Stone Age fossils to date indicates that Neandertals made, at most, a small genetic contribution to our direct prehistoric ancestors.

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  2. Health & Medicine

    Gap in the Defense: Brain cancer patients short on valuable protein

    Brain tumor cells have a dearth of an obscure protein called ING4, whose sister compounds have shown anticancer effects.

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  3. Chemistry

    Mini Motor: Synthetic molecule yields nanoscale rotor

    Scientists have built a tiny rotor out of a synthesized molecule that rotates in the presence of an electric field.

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  4. Brain Gain: Odd RNA converts stem cells into neurons

    An unusual strand of RNA guides stem cells to transform into neurons.

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  5. Astronomy

    Planetoid on the Fringe: Solar system record breaker

    Lurking more than 13 billion kilometers from Earth in the coldest, remotest part of the solar system, a newly discovered body is the most distant object ever found to orbit the sun and the largest denizen of the solar system discovered since Pluto.

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  6. Movie sparks group brain responses

    People exhibit a surprising amount of brain activity in common while viewing a dramatic movie, a brain-imaging study finds.

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  7. Health & Medicine

    Ear piercings cause illness, disfigurement

    Piercing the upper-ear cartilage under nonsterile conditions can leave a person vulnerable to a Pseudomonas aeruginosa infection, as happened in Oregon in 2000.

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  8. Animals

    Road rage keeps ants moving smoothly

    Streams of ants manage to avoid traffic gridlock by a bit of strategic pushing and shoving.

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  9. Health & Medicine

    Heart patients gain from steep cholesterol drop

    Heart patients can lessen their risk of a heart attack and increase their odds of survival by aggressively reducing harmful low-density lipoprotein (LDL) cholesterol in their blood.

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  10. Physics

    Complexity by way of simplicity

    Researchers have demonstrated a new way to simplify some intricate patterns whose extreme complexity has convinced theoretical physicist Stephen Wolfram that traditional science can't explain many important natural phenomena.

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  11. Anthropology

    Grannies give gift of longer lives

    Data from two 18th- and 19th-century farming communities supports the theory that child care assistance from grandmothers has contributed to the evolution of extended human longevity.

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  12. Health & Medicine

    Drug for migraines helps some patients

    An experimental drug that slows blood flow in the brain knocks out migraine headaches in some people.

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