I think bringing back the Woolly Mammoth would be the best idea ever,because we could learn a lot more about them.South Korean and Russian scientist are getting some of a Woolly Mammoth deny to make an egg,so that they will become out extinction.So if you ever want to see a Woolly Mammoth,be on my side.We can also maybe bring back other extinct animals.We might be able to make history with this animal.We could make more money for the countries.The other scientist think that the money we are using for this experiment could go to other diseases like Breast cancer,but I think that this is a good idea.