woolly mammoth model with long curled tusks and shaggy hair stands in a museum exhibit with visitors reading a plaque
A woolly mammoth reconstruction at the Caverne du Pont D'Arc in Ardèche, France.
  • The startup looking to bring back the woolly mammoth announced a breakthrough in its work. 
  • Colossal Biosciences says it created elephant cells that can be reprogrammed to make other cells.
  • The project is being led by George Church, a Harvard genetics professor.

The startup that wants to bring the woolly mammoth back from the dead said it is inching closer to its goal after a breakthrough in creating reprogrammed elephant stem cells.