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  1. Glowing Trio under the Sea: Nitrogen fixer joins algae inside coral

    A coral that fluoresces orange appears to be the first ever found to contain a symbiotic microbe that converts nitrogen into a biologically useful form.

    By Susan Milius

  2. 19453

    I wonder if the growth rings appearing in dinosaur bones are analogous to those of trees, which are determined by the annual climatic cycle. Is it possible that the dinosaur rings were created on a different time cycle? James HendryFlorissant, Mo. Researchers say that they haven’t come up with another type of cycle that seems […]

    By Science News
  3. Paleontology

    Growth Spurt: Teenage tyrannosaurs packed on the pounds

    Detailed analyses of tyrannosaur fossils suggest that the creatures experienced an extended growth spurt during adolescence.