"Dr. Herbert Needleman discovered that lead is harmful to the human body and mind in the 1950s. Since the ...
"Dr. Herbert Needleman discovered that lead is harmful to the human body and mind in the 1950s. Since the ...
"Dr. Herbert Needleman discovered that lead is harmful to the human body and mind in the 1950s. Since then, he has worked towards banning lead from everyday life in hope of stemming lead poisoning." ...