It would be interesting to see how micro-plastics differ from silica/ sand. Something most of us have been exposed to, especially if you live near a beach or ot

It would be interesting to see how micro-plastics differ from silica/ sand. Something most of us have been exposed to, especially if you live near a beach or other sandy environment. One thing I do know is that not all sand is alike. There's the normal sand that has been ground & rounded over millennia and 'sharp sand' used in construction. Getting normal sand on your skin is a minor annoyance, and I'm not aware of any real damage if some are inhaled. Sharp-sand is much more irritating to the skin/ eyes, it feels more like fibreglass than the beach variety, and I believe the sharp particles are the reason for silicosis as they are not easily removed by mucus. It would be interesting to know which category microplastics fall into. You would think (hope) micro-plastic would be more like the natural 'soft' sand variety than the more troublesome sharp sand.