What would Earth be like if humans had never existed? Annalee Newitz11/15/13 6:24pmFiled to: mad sciencehistoryevolutionscience774EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkWhat would Earth be like if humans had never existed? New Scientist wanted to find out. This video is their speculative tour of an Earth that never included Homo sapiens. Would the world really be all that different?