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  1. 19028

    The picture of the mummified dinosaur was amazing and a bit spooky. It is a great find. Patrick LeaheyGeneva, N.Y.

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  2. Paleontology

    Dear Mummy: Rare fossil reveals common dinosaur’s soft tissue

    A mummified dinosaur unearthed in Montana a year ago is giving scientists a rare peek at what the creature's muscles and other soft tissues may have looked like.

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  3. Health & Medicine

    Final Word? Breast surgeries yield same survival rate

    Women with breast cancer who undergo partial-breast removal are just as likely to survive for at least 20 years as are women who have their entire breast removed.

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  4. Math

    A Fibonacci Fountain

    The year 1202 saw the publication of one of the most famous and influential books in mathematics. Widely copied and imitated, Liber abaci introduced the use of Arabic numerals and the Hindu-Arabic place-valued decimal system into Europe. It was written by Leonardo Pisano, who became better known by his nickname Fibonacci. Helaman Ferguson’s Fibonacci Fountain. […]

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  5. Math

    A Fibonacci Fountain

    The year 1202 saw the publication of one of the most famous and influential books in mathematics. Widely copied and imitated, Liber abaci introduced the use of Arabic numerals and the Hindu-Arabic place-valued decimal system into Europe. It was written by Leonardo Pisano, who became better known by his nickname Fibonacci. Helaman Ferguson’s Fibonacci Fountain. […]

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  6. Long live the Y?

    Researchers have identified a means by which the Y chromosome may forestall, or at least delay, the gradual degradation that some biologists argue will ultimately delete it from the human genome.

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  7. Bacterial diet quiets worm genes

    Genetically engineered bacteria help biologists turn off worm genes.

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  8. 19135

    You report that “the sea squirt has the beginnings of a spinal cord, making it a so-called chordate.” That’s the same mistake I fight against each time I teach my zoology class. What makes a sea squirt a chordate is the notochord in the animal’s larval stage. A notochord is a skeletal component, not a […]

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  9. Sea squirt’s DNA makes a splash

    The DNA sequence of a sea squirt may reveal the origins of vertebrates.

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  10. Plants

    Drought-tolerant plant mined for survival genes

    A drought-resistant South African plant is revealing its genetic secrets.

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  11. Tests revise image of kangaroo rats

    An ecological study of kangaroo rats has revised thinking about how these desert dwellers cope with their stressful home.

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  12. Anthropology

    Fossil skull spurs identity dispute

    A dispute has broken out over whether a recently discovered, 7-million-year-old fossil skull represents the earliest known member of the human evolutionary family or an ancient ape.

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