The BEST episodes of Unnatural Selection

Every episode of Unnatural Selection ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Unnatural Selection!

From eradicating disease to selecting a child’s traits, gene editing gives humans the chance to hack biology. Meet the real people behind the science.

Last Updated: 2/2/2026Network: NetflixStatus: Ended

8.03

32 votes

#1 - Our Next Generation

Season 1 - Episode 4 - Aired 10/18/2019

As Jackson gets ready for surgery, Maria and Victor await their “three-person baby” at a Ukrainian clinic that uses pronuclear transfer technology.

7.47

59 votes

#2 - Cut, Paste, Life

Season 1 - Episode 1 - Aired 10/18/2019

Gene-editing technologies promise to eliminate diseases, and biohackers push for access while scientists grapple with formidable ethical questions.

Watch Now:Amazon Apple TV

7.30

30 votes

#3 - Changing an Entire Species

Season 1 - Episode 3 - Aired 10/18/2019

Using gene drive technology, humans have the chance to shape -- and eradicate -- whole species. But the implications alarm bioethicists and activists.

Watch Now:Amazon

6.97

36 votes

#4 - The First to Try

Season 1 - Episode 2 - Aired 10/18/2019

New gene therapies may change the lives of Jackson, Nick and Tristan. But on this risky frontier, nothing is guaranteed, and the price can be steep.

Watch Now:Amazon