See paper below authored by 24 authors who are affiliated to well-known universities like Cambridge, Stanford, Harvard and others published on the journal Futures
https://www.sciencedirect.com/science/article/pii/S0016328719303702PS - On this issue see also the first post that was placed in this blog https://pacheco-torgal.blogspot.com/2019/09/long-term-trajectories-of-human.html