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Will De-Extinction Become Reality?

Though scientists don't expect a real-life 'Jurassic Park,' an extinct species could be resurrected as long as it has enough intact ancient DNA.

March 17, 2013
1:15 PM EDT
Female gastric brooding frogs, such as Rheobatrachus silus pictured here and last seen in 1985, swallowed fertilized eggs, turned its stomach into a uterus and gave birth to froglets through the mouth. | Mike Taylor/Conservation International