The woolly mammoth, extinct for thousands of years, could be brought back to life in four years through cloning.
Previous efforts in the 1990s to recover the crucial part of cells from mammoths found in the Siberian permafrost failed because they were badly damaged by the extreme cold. But a new technique has overcome that hurdle.
Akira Iritani, a professor at Japan's Kyoto University, is resuming his campaign to resurrect the species that died out 5,000 years ago. (© Daily Telegraph, London).