Uncategorized

  1. Astronomy

    X rays trace fierce stellar winds

    A high-resolution X-ray view of the Rosette nebula, a nearby star-forming region, has revealed for the first time that the stellar winds from massive stars heat surrounding gas to a scorching 6 million kelvins.

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  2. 18972

    Several key ideas seem missing from “Life on the edge”: 1) the fundamental nature of overpopulation and how it combines with technology to drive mass extinction; 2) the concept of functional extinction, an example being the decimated numbers and diminished range of elephants; and 3) a reasonable extrapolation of human technology. The statement that our […]

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  3. Earth

    Life on the Edge

    Will a mass extinction usher in a world of weeds and pests?

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  4. 18966

    One cannot be around cats long without observing that they have intelligence and personalities nearly as complex and diverse as people do.