Well. I think the developmental deficits are an already told story. What's "new" is study of adults showing they're also affected. It's kind of a "duh" thing, i.e. most people wouldn't be cool with drinking heavily lead tainted water, even if it's "less harmful" in adults or whatever. But the story here is that they studied it, and lo, the conventional wisdom that it doesn't harm adults doesn't pan out. Turns out poisoning a city is bad for its inhabitants.

I'm slightly regretting the moralizing tone here, but this is a case where it just seems obscene to me that we as a society didn't act effectively to intervene here. This was entirely mitigable, given adequate resources and attention. It's a horror show.