Colossal Biosciences said its scientists have simultaneously edited seven genes in embryos to create mice with long, thick, woolly hair.

On March 4th Colossal Biosciences, a company trying to revive long-gone species, announced that they had genetically engineered a Mus musculus to have qualities of the extinct Mammuthus primigenius. Instead of earth-shaking stature or enormous tusks,

Extinction is still forever. But scientists at a biotech company are trying what they say is the next best thing to restoring ancient beasts.