How Tasmanian devils are evolving to fight back against extinction

Devil facial tumor disease, or DFTD, has cut the Tasmanian devil population by 90 percent. Now, some devils have evolved to resist the virulent cancer.

GREG WOOD/AFP/Getty Images
  • Devil facial tumor disease, or DFTD, is a transmissible cancer that Tasmanian devils spread through bites.
  • The cancer is highly infectious and lethal, and the Tasmanian devil population has dropped by 90 percent since it was first discovered.
  • In the short time that we've known about the disease, however, the devils seem to be evolving new defenses that are helping some of them fight back and survive.
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