Uncategorized

  1. Animals

    Viruses can kill wasp larvae that grow inside infected caterpillars

    Proteins found in viruses and some moths can protect caterpillars from parasitoid wasps seeking a living nursery for their eggs.

    By Erin Garcia de Jesús
  2. Earth

    Dinosaur-killing asteroid may have made Earth’s largest ripple marks

    A tsunami created by the Chicxulub impact could have formed giant ripples found in rock under Louisiana, a new study finds.

    By Nikk Ogasa
  3. Animals

    Polar bears sometimes bludgeon walruses to death with stones or ice

    Inuit reports of polar bears using tools to kill walruses were historically dismissed as stories, but new research suggests the behavior does occur.

    By Gloria Dickie
  4. Life

    If confirmed, tubes in 890-million-year-old rock may be the oldest animal fossils

    Newly described wormlike fossils may be ancient sea sponges.