You didn't ask for it. You didn't choose it. But microplastics are inside you right now — circulating in your blood, lodged in your lung tissue, embedded in your heart muscle, and present in organs never designed to filter plastic. Scientists have detected them in newborn babies and umbilical cord blood. In remote Arctic ice. In the deepest ocean trenches. And in the carotid plaque of cardiovascular patients, where their presence was associated with dramatically higher rates of heart attac...