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                 Bird Genomes Sequenced for Avian Tree of Life

   by Rosanne Skirble

   Sixty-five million years ago, an asteroid hit Earth, killing the
   dinosaurs and many other life forms. Birds were among the survivors,
   and, after that mass extinction, as life began to flower again, a burst
   of evolution gave rise to the more than 10,000 bird species we know
   today. As VOA's Rosanne Skirble reports, researchers worldwide have
   joined to create the most reliable avian tree of life to date.
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   [1]http://www.voanews.com/media/video/2555610.html

References

   1. http://www.voanews.com/media/video/2555610.html