Their universe/s is/are full of magical artifacts insane level technology, people who lived thousand or even millions of yhears, ilands full of extinct and mitical animals.

Like, imagine that you are an archaeologi graduate and you have to constantly leave the excavation sites because you accidentally find random cursed artifacts or the remains of ancient aliens who are still alive and whant to destroy the earth.

Think of all those biologists, zoologists, and paleontologists who would risk everything to end up on one of the many dinosaur-infested islands just to see their mating rituals, hunting habits, and conduct various studies to research them.

Or all the historians who must research manuscripts describing the ancient vampiric wars of the fifth century leaded by Vlad the impaler.  Vandal Savage is over 50K years old, he is not even a human he is Cro-Magnon. He would have been harassed by students and professors all around the globe, asking him about everything from the specifics of a long forgotten languages, aspects of enchent cultures and ofcorse ask him about his political and social opinions.

It's so damn funny for me to think about it.

P.S I know this is not necessarily true, many of the artefacts, dinosaur islands and all the other stuff are forgotten,  well hidden, forbidden for outsiders or way too dangerous even for superheroes. But it's really interesting to think about what their world history and science as a whole would be and all the knowledge abouth the past they can acses with the tehnology they have.

Sciences like history, archeology, paleontology etc must be insane in the DC universe.