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  1. Health & Medicine

    Injections cut need for HIV drugs

    An experimental vaccine, when given to people infected with HIV, appears to reduce their dependence on antiviral drugs.

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  2. Humans

    Death can outdo ABCs of prevention

    Abstinence and monogamy may deserve little, if any, credit for the recent drop in the proportion of Ugandans who are infected with HIV.

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  3. Humans

    Letters from the March 12, 2005, issue of Science News

    Cheaters like us? The model for the emergence of a population of “cheaters” out of a population of “cooperators” described in “When Laziness Pays: Math explains how cooperation and cheating evolve” (SN: 1/15/05, p. 35) gives a fresh viewpoint on existing ecosystems—and much more. Might the evolution of asymmetric modern sex from symmetric DNA exchange […]

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  4. Health & Medicine

    Inner-brain electrode may curb depression

    Deep-brain electrical stimulation has shown promise in treating severe depression.

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  5. Astronomy

    Radiation from a baby star

    X-ray telescopes have captured the earliest and clearest view of the core of a gas cloud about to transform into a star.

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  6. Master gene found for insect smell

    A single gene may oversee the sense of smell in a variety of insect species.

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  7. Anthropology

    Inside view of our wee, ancient cousins

    A tiny, humanlike species that inhabited an Indonesian island more than 20,000 years ago possessed a brain that shared some organizational features with Homo erectus, a large-brained human ancestor that thought in complex ways.

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  8. Faces elicit strong emotions in autism

    Children with autism avoid eye contact because they experience uncomfortably intense emotional reactions when looking at faces.

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  9. Physics

    Primordial Nukes

    The rocky remains of nuclear reactors that formed spontaneously in African uranium deposits 2 billion years ago are yielding striking new details about their operation as well as signs that a fundamental aspect of the universe may have once been stronger than it is today.

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  10. Materials Science

    Venetian Grinds

    Venetian Renaissance artists, renowned for their vibrant colors, mixed powdered glass with their paints in an attempt to expand their palettes and create unique optical effects.

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  11. From the March 2, 1935, issue

    A new telescope nears completion, a new therapy for heart disease succeeds, and a new low temperature is reached.

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  12. Earth

    What’s in the Dirt?

    Curious about the abundance of various chemical elements in the area where you live? The U.S. Geological Survey offers a database of more than 60,000 chemical analyses of stream sediment and soil in different parts of the United States. Color-coded maps provide county-by-county data on the concentrations of such elements as mercury, arsenic, selenium, and […]

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