WASHINGTON — Michigan lawmakers on Tuesday charged leading chemical corporations with downplaying the health and environmental harms of a class of chemicals known as PFAS and for dodging their full legal and financial responsibility.   A representative for 3M, which uses per- and polyfluoroalkyl substances (PFAS) to manufacture Scotchgard, testified that the substances — which have … Continue reading ‘This is ridiculous’ — Michigan lawmakers slam corporations on PFAS