Woolly mammoths are at the forefront of controversial de-extinction efforts, writes Rebecca Woods in a commentary.

Woolly mammoths had a truncated version of a gene called TGF alpha, as well as a mutation in the keratin gene KRT27, which the scientists incorporated into woolly mouse DNA.

Company creates 'woolly mouse' in quest to bring back mammoths. Turns out, it's really cute. "They are much cuter than we thought they would be," Ben Lamm, co-founder and CEO of Colossal, told USA ...

The Colossal Biosciences woolly mouse Colossal Biosciences. In their latest work, Colossal researchers analyzed the genomes of 62 elephants and 59 mammoths—dating back between 1,200,000 and ...

Then, they cut and paste mammoth genes into elephant DNA, and raise the engineered cells in a surrogate, which leads to a mammoth calf. Pictured is Colossal's "woolly mouse" next to a wild-type mouse.

Hoping to bring the giant, ancient animal back from extinction, scientists have created a far smaller woolly creature. Woolly mice have some of the key traits of mammoths, including their thick ...

Extinction is typically for good. Once a species winks out, it survives only in memory and the fossil record. When it comes to the woolly mammoth, however, that rule has now been bent. It’s been ...

Scientists at the Dallas-based Colossal Biosciences have taken a small step towards their goal of bringing back the woolly mammoth: they've created the woolly mouse ...

In addition to working on a woolly mammoth, the company aims to bring back the Tasmanian tiger and the dodo bird. But that 2028 goal might not be realistic.

Colossal created the mice by modifying seven genes simultaneously and from information gathered from analysis of woolly, Columbian and steppe mammoth genomes that were up to 1.2 million years old.

This “woolly mouse” marks an important step toward achieving the researchers' ultimate goal — bringing a woolly mammoth-like creature back from extinction, they say. “For us, it’s an ...