Elevated levels of lead have been found in schools across the US, alarming experts who say it is particularly harmful to children Continue reading...
A hidden scandal: America's school students exposed to water tainted by toxic lead
6. března 2019 11:01
Příroda
Celý článek: https://www.theguardian.com/environment/ng-interactive/2019/mar/06/america-schools-water-lead-crisis
Zdroj: The Guardian
