big business has a long history of denying and covering up hazards
they are well aware of. tobacco is a great example, second hand
smoke

I have a friend with somewhat retarded kids, that had high lead levels
when young, from their old lead based painted home.

Its sad the kids are nearly grown but will never be normal. Lead
DEFINETELY CAUSES RETARDATION in low levels.

No ddoubt one day workers in moon suits will be removing treated wood
and contaminated soil at great expense.