The 2020s's the 3rd decade of the 21st century of the Anno Domini (common) era. It'll begin on January 1, 2020 and end on December 31, 2029. By the end of the decade, world population's projected to surpass 8 billion people. Almost all of Generation Z will be in adulthood by the year 2025 and the first members of the next generation after Generation Z will become teenagers. Notable predictions and known events The interaction of the three main decadal solar cycles suggests an upcoming reduction… (More on 2020s)