How Grass turned us from apes to humans

Chimps living in open grassland walk on two legs at exactly the same rate as chimps in dense forest. That single finding breaks the most popular explanation for why humans stand upright. This video covers what actually happened, and what it left in your body. Watch to find out. #humanevolution #bipedalism #paleoanthropology == Timestamps == 0:00 The Biological Debt 0:36 The Rise of Grass 1:12 Crossing the Open Ground 2:06 The Fossil Evidence 3:03 The Efficiency of Bipedalism 4:06 Hands, Heat, and Survival 4:49 The Laetoli Footprints 5:31 Challenging the Savanna Hypothesis 6:23 Why We Actually Stood Up 6:53 A Body Designed by Plants ________________________________________ The Curious Ape covers science, evolution, anthropology and all human knowledge — the questions most people think but never ask out loud. Every video is built on real research, with surprising answers and zero filler. Got a question you want us to dig into? Drop it in the comments. If you like what we do, please subscribe.