Advances in genetics are making resurrecting lost animals a tangible prospect. Scientists have already cloned endangered animals and can sequence DNA extracted from the bones and carcasses of long-dead, extinct animals.
Geneticists, led by Harvard Medical School's George Church, aim to bring the woolly mammoth, which disappeared 4,000 years ago, back to life, imagining a future where the tusked ice age giant is restored to its natural habitat.
The efforts got a major boost on Monday with the announcement of a $15 million investment. Read more below: