Horizon Season 18 Episode 12
Episode Title: Unknown
Genre:
Documentary
Countries:
UK,
Airing Date: March 20, 1982
Runtime:50 mins
IMDb Rating:
Watch Horizon Season 18 Episode 12 full movie online free in HD with English subtitles – no download needed.
Horizon: In this episode, Horizon explores the new evolutionary theory that there are sudden, vs. gradual, evolutionary changes from one species to another.