The scientific work behind the park is what makes this endeavor extraordinary. The idea sounds whimsically theoretical, until you dive into the work that Nikita Zimov and others have done reconstructing the paleoscience behind it.
The best way to learn, imo, is to watch Nikita himself speak about his work. In the webinar below (2018), Nikita spends about an hour speaking extensively about his research in the Siberian arctic, in addition to building the park itself and the studying the impacts on the park grounds.