Every molecule of water on Earth cycles through the atmosphere, oceans, and living things in an endless loop. According to Live Science, that means the water in your glass has likely been inside countless organisms—including, well, having gone through their biological systems. Over billions of years, with life perpetually consuming and excreting water, the odds that any given molecule has been peed at least once are essentially certain. So you're drinking water that's as ancient as it is recycled.

Listen to this story

Hear this and more stories in a personalized audio briefing.

Open The Chonkerton