Andrew Greaves wrote:soap may be toxic, but one thing is undeniable . it kills germs, bacteria, viruses etc.
Jocelyn Campbell wrote:Leaded gasoline was linked to higher crime rates - especially in cities where leaded gasoline fumes were more concentrated [...] I found it staggering and scary that lead has affected behavior so dramatically.
Patrick Mann wrote:
Interesting, but also important to bear in mind that correlation does not equal causation.