So what did happen to quicksand? Was it just a 50s-60s thing? I remember lots of quicksand on TV and in comic books, and even in some movies. Batman and Robin were champions at getting into and out of quicksand.

I've read thousands of fan fiction stories, and I can think of one, just one, that had quicksand.

Where did all the quicksand go? Has it been destroyed by global warming?