Uncategorized

  1. Planetary Science

    Space Class

    If you’re looking for classroom materials tied to recent NASA news reports, such as evidence suggesting the presence of water on Mars, this Web site pulls together a variety of articles, images, and Web links related to any given report. The archive includes topics such as solar storms, meteors, planetary alignments, eclipses, and many others. […]

    By Science News
  2. Math

    Pinpointing Prey

    Eight command neurons (black) represent the eight directions of the legs from which they receive input. Partner neurons (gray) send inhibitory signals. van Hemmen et al./Physical Review Letters Under cover of darkness, a burrowing cockroach skitters across the desert sand. Its rapidly moving legs excite tiny ripples that travel along the ground, tipping off a […]

    By Ivars Peterson

  3. 19223

    The July 8 story about “trilobite farming” states that “these trilobites would be the earliest creatures known to have forged a partnership with another species.”