Nearly a century of leaded gasoline use on roads around the world has come to an end, the UN Environment Programme announced Monday, after Algerian service stations stopped selling the fuel last month.
Leaded gasoline — which contains the compound tetraethyllead and is linked to serious health problems — was first patented for use in 1922, allowing cars to use higher compression ratios, making them more powerful. By the 1970s, it was present in almost all gasoline worldwide.