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  1. 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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  2. Earth

    Life on the Edge

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

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  3. 18966

    One cannot be around cats long without observing that they have intelligence and personalities nearly as complex and diverse as people do. They communicate with each other and people, both verbally and with body language.