"thick skull of Homo Sapiens"
Generally, if we were all "thick", we'd all have no idea how human infrastructure & activities are degrading life on Earth (I'm aware of the knowing, in part, but not caring much)
people do have the potential to understand the problems & what we can do to mitigate those problems
So, do your best to educate, to inform, people that "have no idea how varying forms of pollution are degrading life on Planet Earth"
It's a numbers "game".