For scientists studying the history of human evolution, determining when certain changes happened and what may have prompted those changes are very important questions to answer. It’s only natural that we wonder where we came from, but there’s only so much that fossils can teach us, and sometimes we have to make big assumptions about what happened in our distant past.
One of the most puzzling mysteries has long revolved around the period of time in which human ancestors first began to walk upright. Archaeologists believe that as some of the environments in which humans first took root began to change from forest to grasslands, bipedalism became a big advantage. Now, a new study suggests that the explosion of a nearby star may have contributed to those environmental changes in a big way.
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Scientists suggest a nearby supernova may have prompted human ancestors to walk upright originally appeared on BGR.com on Wed, 29 May 2019 at 19:06:34 EDT. Please see our terms for use of feeds.
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