I sort of cringe when I hear about microscopic images which show “visible, jagged-edged ‘foreign bodies'” in our cells.

And yet, there’s the more familiar lead thing. Who wants lead in our water supply (tap, bottled, etc.)? Aren’t all parents concerned? How have perspectives and perceptions changed in the past? In the present.

Even with modern chemistry, microscopes, chemical analysis, lab research & group studies, what does it take for collective agreement on the data? To trust the science? To take collective (political) action? To change habits?