Frustratingly problematic headline, I'd expect better from Popular Mechanics.<p>The title "Oops, Scientists May Have Severely Miscalculated How Many Humans Are on Earth" is entirely misleading- it's not "scientists" who have miscalculated this, it's government bureaucrats in various countries who are responsible for collecting and reporting census information in their region.<p>This matters, because we live in a world where many people get much of their information only from headlines, and a recurring narrative of "Scientists make mistakes" or "Scientists can't be trusted" has real impact to policy on climate change, vaccine hesitancy, and other areas where distrust of scientific knowledge or expertise causes uninformed people to make decisions harmful to their own well-being or harmful to those around them on everything from nutrition to pollution to evacuations before hurricanes.