Life

  1. Health & Medicine

    Vaccinated man excretes live poliovirus for nearly 3 decades

    For almost 30 years, a man with an immune deficiency has been shedding poliovirus strains that have evolved from the version he received in a vaccine.

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  2. Animals

    Tropical songbirds get their growth spurt late

    Tropical songbirds are late bloomers, but that delayed development may give them an advantage after leaving the nest.

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  3. Animals

    Tropical songbirds get their growth spurt late

    Tropical songbirds are late bloomers, but that delayed development may give them an advantage after leaving the nest.

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  4. Genetics

    DNA architecture, novel forensics offer new clues

    Going from theory to practice is always rife with problems, be it shifting from the sequence of DNA’s letters to observing its dynamic machinations or from an identity marker in the lab to a piece of courtroom evidence.

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  5. Humans

    Moon bounces, bad spider leaders and more reader feedback

    Readers debate faith's role in evolution, compare politicians to spiders and more.

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  6. Chemistry

    Wanted: Crime-solving bacteria and body odor

    Forensic investigators are moving past old-school sleuthing to analyze microbes and odors that tell a more complete story, while pursuing ways to enhance traditional tools as well.

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  7. Health & Medicine

    Blood test can predict breast cancer relapse

    Blood tests for breast cancer DNA can predict relapse.

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  8. Animals

    Twin pandas look forward to growth spurts

    The surviving panda twin born at the National Zoo last weekend will undergo DNA tests to discover paternity.

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  9. Animals

    A world of mammal diversity has been lost because of humans

    Humans have eradicated large mammal biodiversity in most regions of the globe, a new study finds.

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  10. Health & Medicine

    Virus closely related to hepatitis A discovered in seals

    Scientists have discovered a relative of the hepatitis A virus in seals.

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  11. Animals

    Long-tongued fly sips from afar

    Long-tongued flies can dabble in shallow blossoms or reach into flowers with roomier nectar tubes.

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  12. Animals

    Chimps keep numbers high as forest losses mount

    African apes show surprising resilience in face of forest destruction.

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