This point downplays just how many hazardous materials are around us at all times. Yes, heavy metal exposure is bad and we did some really stupid things with l

This point downplays just how many hazardous materials are around us at all times. Yes, heavy metal exposure is bad and we did some really stupid things with lead last century. We still use lead acid batteries everywhere and it is not causing dementia or leeching into groundwater. The materials don't matter, how they are handled does.