>The study indicates that Neanderthals, in addition to smashing bones to access the marrow—a behavior shared by their earliest African ancestors—also crushed them into fragments and boiled them to obtain bone grease, a nutrient-rich resource.

I wish the article went into more details about how they boiled the bones. My first thought was that smashing bones and boiling them is not all that impressive. And then I thought about how I would boil bones without a pot to boil them in... and actually that does sound like it would be a challenge and require a lot of collaboration and planning.