As a Romanian who had to study German in school, I testify to that. I still remember the word "Umweltverschmutzung" but no idea if it's der, die, das, dem or des umweltverschmutzung :P
A small trick with the words ending in "-ung" is they're often feminine so "die" in nomanative.
I would have bet on "die", just coze it "sounds right".
According to my lessons, they also talk about Umweltschutz (environmental protection), especially Mülltrennung (garbage sorting).