The mice were created by Colossal Biosciences, which edits DNA for species conservation, and has been working to bring back the woolly mammoth since 2021.

Experiments on mice could see hairy, genetically modified elephants living in the Arctic, a US company claims.

Colossal’s ultimate goal is to introduce these woolly mammoth traits, along with others, into modern elephants. This general area of science has become known as de-extinction. However ...

To understand which edits are needed, the firm’s scientists must work out which tweaks give rise to mammoth traits. That is hard to test in elephants, partly because these animals gestate for 22 ...