But you can broaden the questions as well.

Looking at Neanderthals/hominids:

How does this relate to the understanding of art, creativity, madness, motherly love? The notions of greed in children, in adults, in a capitalist economy, and how does that relate to the regulation of markets, conflicts of interests, incentivization and moral hazards? How does this relate to the notions of religion/theology, race, climate tolerance? How does climate tolerance relate to the social structure of Californians, and what does air conditioning mean for society going forward? How does early hominid tool use relate to our ability to drive cars, use computers, integrate robotics with human life, and parkour?

Obviously one can get lost in mindless ramblings of curiosity. But if you make an effort to be constructing an overall fabric of "how things work", you have a reason and a direction for your curiosity. It combines being mindful with entertainment. Over time you create a your own grand unification theory (not specific to physics, mind you), and you have a framework into which you can easily slot new information (or update existing).