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  1. Astronomy

    Record-breaking supernova

    A newly discovered supernova, 100 billion times as bright as the sun, is the most luminous ever recorded.

    By Ron Cowen
  2. Humans

    Letters from the October 27, 2007, issue of Science News

    Heated dispute “It’s not nice to fool Mother Nature” (SN: 8/25/07, p. 125) states that “an increase in the atmospheric concentration of carbon dioxide, not an increase in solar radiation” is responsible for current global warming. What is the scientific—not political—basis for that remark? Warren FinleyLaguna Beach, Calif. Increasing solar radiation doesn’t affect climate change? […]

    By Science News
  3. Earth

    The Big Dry

    Parts of Australia have suffered from severe drought for more than a decade, and people, vegetation, and animals are feeling the heat.