The passenger pigeon, the dodo and the woolly mammoth are just a few of the species wiped off the Earth by changing environments and human activities.
Now, advances in biotechnology could enable scientists to bring extinct animals back from the grave. But critics argue the practice would only hinder conservation efforts, by resurrecting creatures that could not survive in the wild.
To read the full, original article click on this link: Incredible Technology: How to Bring Extinct Animals Back to Life | LiveScience
