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  1. Planetary Science

    Europa may have much more shallow liquid water than scientists thought

    Mysterious pairs of ridges scar Jupiter’s moon Europa. Analyzing a similar set in Greenland suggests shallow water is behind the features’ formation.

    By Sid Perkins
  2. Plants

    These flowers lure pollinators to their deaths. There’s a new twist on how

    Some jack-in-the-pulpit plants may use sex to lure pollinators. That's confusing for male fungus gnats — and deadly.

    By Susan Milius
  3. Planetary Science

    Here’s how NASA’s Ingenuity helicopter has spent 1 year on Mars

    The first flying robot on the Red Planet arrived as a technology demonstration. It’s now a trusty scout for its rover partner, Perseverance.