They're all extinct, and some theorize humans played a large part in this. What if we could bring them back? What if we could apologize for our wrongdoings as a species and welcome these creatures onto our planet again?

Is it scientifically possible? One day, this might not be a hypothetical, as science is getting closer to bringing extinct animals back.

Known as de-extinction, it’s the process of bringing extinct animals back from the dead.

What used to be science fiction is slowly becoming a reality.