On December 20, 2013, more than sixty rocks moved across a shallow pond in Death Valley while two researchers stood nearby and watched. For decades, stones on Racetrack Playa had left trails hundreds of meters long across the desert floor, yet no one had ever seen one move. Experiments ruled out ordinary wind, ice remained controversial, and some rocks seemed to require forces the desert simply could not produce. Then a rare combination of water, freezing nights, thin ice, sunlight, and an ordinary breeze finally revealed what had been happening all along. ─────────────────────────────── IN THIS EPISODE— Rocks that crossed hundreds of meters of dry lake bed— Sixty years of experiments that failed to explain their movement— The GPS experiment that finally caught the stones in motion— Why a few millimeters of ice and a light breeze were enough SOURCESGeological Society of America Bulletin, 1976American Journal of Physics, 2011PLOS ONE, 2014Death Valley National Park ─────────────────────────────── Narration in this episode is AI-assisted. Research, writing, and editorial decisions are human. Reality Is Strange — real phenomena, verified, and stranger than they should be.

The Stones That Moved When No One Was Watching

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