‘We have been poisoning ourselves’: has ice analysis revealed the truth about lead?
by Nicola Davis from on (#2R8Z2)
Exclusive: ice cores and records from the Black Death show lead entered the air from human activity - and scientists claim "natural background" levels are zero
Analysis of an ice core taken from the Swiss Alps together with records dating from the time of the Black Death have revealed that there is no "natural" level of lead in the air, researchers have claimed.
Once in the body, lead is known to have harmful impacts on health, from behavioural to neurological, reproductive and cardiovascular effects.