Maybe not that difficult. We already have sequenced the mammoth genome [1]. We have CRISPR technology. We can do a diff between the mammoth genome and the eleph

Maybe not that difficult. We already have sequenced the mammoth genome [1]. We have CRISPR technology. We can do a diff between the mammoth genome and the elephant one, and we start editing the elephant one small segment at a time, like in a game of word ladder. We IV fertilize an elephant female, and we get a hybrid. After a few steps, we might end up with an actual mammoth. [1] https://www.scientificamerican.com/article/mammoth-genomes-shatter-record-for-oldest-dna-sequences/ https://www.scientificamerican.com/article/mammoth-genomes-s...