pGreta Thunberg might find some things to enjoy in The Tomorrow War, at least when it comes to the idea that young people can solve the problems of the generation above them.ppIn the new Amazon Prime blockbuster, present-day humans are sent forward in time in order to help the future population of Earth survive a war with a murderous, horrifying army of extra-terrestrials.ppThe Tomorrow War will stream exclusively on Amazon Prime Video from 2 July.