If this is true, every baby boomer must be autistic, especially here in Michigan. I can remember in the 50s and 60s where the air was thick with industrial pollutants, so thick it would leave crud on a car. You could actually see it and smell it, unlike today. I worked on the railroad during the summers in the late 60s to pay for college. I can remember the first time I went to Toledo and we passed a fiberglass plant where the fiberglass was in the air and stung my arms. That's the way it was back then. Comparatively speaking, there is no pollution any more.