Heavy metal is behind crime
Correlation between exposure to lead and violence is being taken seriously across scientific world.
Lead's violent effect on SA's children
The phasing out of leaded petrol seven years ago may cause a significant decline in crime in South Africa in another 11 years.
Nigeria cleans 'poisoned' villages, treats children
Health workers have set up emergency treatment centres in northern Nigeria for scores of children suffering from lead poisoning.
More than 160 Nigerians die from lead in scramble for gold
More than 160 villagers from Nigeria's north died from lead poisoning while trying to leach gold from rock deposits.
