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  1. Humans

    Letters from the April 3, 2004, issue of Science News

    Lack of data? Something jumped out at me from “Telltale Charts: Is anticipating heart disease as easy as 1, 2, 3, 4?” (SN: 1/31/04, p. 72: Telltale Charts). It’s that there were no published data supporting the 50 percent rule taught for years in medical schools. I think this speaks volumes about science and medicine […]

    By Science News
  2. Math

    Pinpointing Killer Asteroids

    Two award-winning high school students' projects focused on new methods for pinpointing asteroids locations.

    By Ivars Peterson
  3. Humans

    From the March 24, 1934, issue

    A meteorite photo, the discovery of triple-weight hydrogen (tritium), and a new mirror for movie production.