A five-minute daily deep dive into a major unsolved mystery in science, history, or philosophy. No clickbait, no infinite scroll — just the edge of what we know.https://thehalfknown.com/en-ushttps://thehalfknown.com/mysteries/dyatlov-pass/https://thehalfknown.com/mysteries/dyatlov-pass/In February 1959, nine experienced hikers cut their way out of their own tent, from the inside, and walked into a Siberian night forty degrees below zero. A 2021 physics paper finally explained how. It still can't explain why.Wed, 19 Aug 2026 00:00:00 GMTdeathhttps://thehalfknown.com/mysteries/the-wow-signal/https://thehalfknown.com/mysteries/the-wow-signal/On a summer night in 1977, a radio telescope in Ohio heard something it was built to hear and never heard again. The astronomer reviewing the printout circled the reading and wrote one word in the margin. We have been listening for an encore for almost fifty years.Tue, 18 Aug 2026 00:00:00 GMTsignal