Was that about health concerns, or pollution and environmental concerns? Obviously health and the environment are very related, but what I mean is that even the term "microplastic" didn't exist when you were born, and I thought the idea that consumption of or close contact with plastic could cause individual health problems was relatively new. Not that literally nobody had thought of it, but my impression is that pushback against plastic for most of its history was driven by giant piles of trash that don't biodegrade, turtles getting stuck in soda packaging, stuff like that.