Life may have emerged on Earth in one of these two possible ways, scientists say Yahoo News Canada A New Study Points to Two Origins of Life on Earth by Tracing Early Chemical Reactions in Single-Celled Organisms Smithsonian Magazine Two origins of life: Free-living cells may have emerged twice as bacteria and archaea diverged Phys.org 'Only One Conclusion': Radical Study Suggests Life on Earth Arose Twice ScienceAlert