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  1. Breast Cancer Lead: Overactive gene is linked to disease

    A mutated gene that's overly active in breast cancer cells could offer a new target for cancer drugs.

    By Patrick Barry
  2. Paleontology

    Big and Birdlike: Chinese dinosaur was 3.5 meters tall

    Paleontologists have unearthed the remains of a gigantic birdlike dinosaur, 3.5 meters tall, that lived 70 million years ago in what is now China.

    By Sid Perkins
  3. Earth

    Trouble for forests of the northern U.S. Rockies?

    Climate change over the coming decades may cause forests in northern portions of the U.S. Rockies to stop absorbing carbon dioxide from the atmosphere and instead become net emitters of the gas.

    By Sid Perkins

  4. How sea turtle hatchlings know where to crawl

    Newly hatched sea turtles use a variety of senses, not just sight, to find their way to the ocean.