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This file picture taken on April 27, 2012 shows two 14 month old Tasmanian Devils exploring their enclosure at Devil Ark in the Barrington Tops area of Australia's New South Wales state. Their numbers decimated by a vicious face cancer, Tasmanian devils seem to be pulling back from the brink of extinction through lightning-fast genetic evolution, astonished scientists said on August 30, 2016. A detailed comparison of the genomes of 294 devils, before and after the cancer emerged 20 years ago, revealed species-wide adaptations in seven genes in a mere four to six devil generations.Five of the genes are associated with immunity and cancer resistance in mammals. (Photo by Greg Wood/AFP Photo)
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