A video article on the unclearable (or at least uncleared) Red Zones remaining near Verdun.
What is the arsenic connection?
Looks like the plants came back pretty well.
That actually explains a lot about the French doesn't it?
I vaguely recall what arsenic was used for, in propellant or something, back in the day, but I don't recall the details.
Arsenic was used in Lewisite Gas, a blistering gas used in World War I. IUPAC name 2-chloroethlenylarsonous dichloride.