In the wake of growing environmental concerns, a startling revelation from a study published by the Proceedings of the National Academy of Sciences has come to light: a typical one-liter bottle of water is found to contain about 240,000 plastic fragments. That’s 100 times more plastic particles than previously estimated. Alarmingly, many of these plastic particles are so minuscule—less than 1 micrometer in length—that they have been virtually undetectable until now. Known as nanoplastics, these particles are small enough to penetrate human cells, posing potential health risks to us and, crucially, to the well-being of our children.