News in Brief

  1. Animals

    Once settled, immigrants play important guard roles in mongoose packs

    Dwarf mongoose packs ultimately benefit from taking in immigrants, but there’s an assimilation period.

    By Helen Thompson
  2. Health & Medicine

    When tumors fuse with blood vessels, clumps of breast cancer cells can spread

    Breast cancer tumors may merge with blood vessels to help the cancer spread.

    By Tina Hesman Saey
  3. Archaeology

    Hidden hoard hints at how ancient elites protected the family treasures

    A secret stash at an ancient site in Israel called Megiddo illuminates the Iron Age practice of hoarding wealth.

    By Bruce Bower
  4. Animals

    Even a tiny oil spill spells bad news for birds

    Just a small amount of crude can make birds less active.