‘Resurrection science’ is gaining steam, but are scientists any closer to reviving lost species?

Colossal Biosciences, which aims to revive extinct species, announced it has raised an additional $200 million. Critics say de-extinction in its purest sense isn’t possible.

​ Colossal Biosciences, which aims to revive extinct species, announced it has raised an additional $200 million. Critics say de-extinction in its purest sense isn’t possible. Read More Breaking News, Latest News and Videos | CNN