Zimov Hypothesis
Гипотеза Зимова (original)
In Siberia Sergey Zimov and his son Nikita are attempting to slow down the melting of the permafrost, which holds huge carbon reserves, by reintroducing large mammals present in the area during the ice age. It is a mammoth project driven by the faith and convictions of a small group of adventurer-researchers.
Starring
It's a documentary movie, and has a rating of 7.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Sweden.