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History of Cenozoic Life

Life, particularly the mammals, diversified tremendously into niches left vacant by the Cretaceous extinction.

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Pleistocene Park

Pleistocene Park

Credit: Charles R. Knight
Source: http://en.wikipedia.org/wiki/File:Woolly_mammoths.jpg
License: CC BY-NC 3.0

Would you to see a living specimen of a woolly mammoth? Someday soon, you may be able to!

Amazing But True!

  • Scientists say that 99.9% of all species that once lived are now extinct. Among them are the dinosaurs and the giant mammals that lived during the ice ages. These megafauna capture our imaginations. What were they like? What if they could come back? The extremely popular science fiction film Jurassic Park is based on this idea. The film (and book) features a park that holds living clones of extinct dinosaurs. But de-extinction, as it is called, is no longer just science fiction. Scientists are getting closer to being able to bring extinct animals back to life. Just imagine the woolly mammoths at Pleistocene Park!
  • Humans have caused many species extinctions and will certainly cause many more. Even more animals went extinct before humans even came on the scene. Even if we can bring back extinct animals, there is another question: Should we?

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With the links below, learn more about de-extinction. Then answer the following questions.

  1. Why are woolly mammoths among the species being considered for de-extinction?
  2. What sort of genetic material do scientists need to recreate an extinct species?
  3. How can an extinct animal baby be born? What are scientists proposing for a baby woolly mammoth?
  4. Once an extinct organism is alive, what else does it need to survive?
  5. Some day humans will be able to bring back extinct animals. Should we?

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Image Attributions

  1. [1]^ Credit: Charles R. Knight; Source: http://en.wikipedia.org/wiki/File:Woolly_mammoths.jpg; License: CC BY-NC 3.0

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