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  1. Science Past for February 28, 1959

    WEATHER SATELLITE ORBITING — The United States has launched into orbit the first baby weather station in space. It was hurled into its earth-circling path at 10:55 a.m. Feb. 17, and its predicted lifetime is several decades. The batteries powering the radio transmitting weather information, however, have only a two-week lifetime. The 20-inch, 21.5-pound satellite […]

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  2. Space

    Cosmic mystery

    High-energy invaders from space could signal a nearby pulsar, or perhaps dark matter.

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  3. Life

    Mitochondria Gone Bad

    Problems in the cell’s energy factories power new ideas on disease and aging.

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  4. Earth

    First wave

    The presidents of two island nations draft escape plans, anticipating sea level rise.