"Unbelievable Yet True: 30 Astonishing Facts Shared by People"

A Reddit user asked for scientifically proven facts that are hard to believe, sparking a discussion about mind-boggling truths such as grasshoppers having ears on their bellies, the inverted image on the retina, the Monty Hall paradox, swaying skyscrapers, unique snowflakes, non-living viruses, and more. The conversation revealed people's skepticism about various scientific phenomena, from the existence of dark matter to the effects of sugar on hyperactivity, showcasing the intriguing and sometimes unbelievable nature of scientific facts.