Weird that the article doesn't mention removing lead from gasoline.

Did the definition of a serial killer change after the 1970s?

Nobody wants to work (at serial killing) anymore

And only in the US. No other country at any other point in history had so many documented serial killers. I think it's because in the 1970s, your ID was a handwritten piece of paper without even a picture on it, there was no internet, no fingerprint database, DNA wasn't a thing, there was no national news, and no nationwide police agency, but there was a massive highway system and a huge, easily traversable landmass. Packing up and moving to a new town with a fake name and a fake ID where no one had ever heard of your crimes was never easier than in 1970s USA.

No. Forensic science improved, communications technology improved, and government-issued IDs became more difficult to forge.

Once police agencies started communicating with each other and sharing evidence with each other, it became a lot more difficult to just disappear, move a few states away, and reappear as someone else with another name.

Because that had nothing to do with it. If leaded gasoline caused serial killers, there would be a worldwide increase in the number of serial killers, but this isn't the case.

This number of serial killers is unique to the US in this specific time period because, at that place, during that time, it was never easier to be a serial killer. Technology had progressed enough to give us cars, highways, guns, and ammo, but hadn't progressed enough to give us nationwide databases, nationwide news, DNA science, or IDs that couldn't be easily forged.

Only in this place, during this time, could someone kill multiple people, leave behind virtually no evidence, then move hundred of miles away under a fake name and repeat that process as many times as they wanted.

Anywhere else but the US, they would have to cross a national border, which would be tracked and documented and required documents that couldn't be easily forged. Any other time in history, you either can't move hundreds of miles easily, or forensic science has advanced enough to make it much more difficult to leave no evidence behind.

My thoughts exactly. It impacted way more of society than people realize. Even those that lived through those times don't know.

They forgot about 50 serial killers in just 10 years???

The Aroma of Tacoma.

Millenials killed the serial killing industry!

Come to think about it that “killing the person i hate and at the first sign of trouble running to start a new life elsewhere” is probably an ancient practice.

And once you done it once and have the survivorships-bias there are increased odds to do it again.

What about other gigantic industrial nations like Canada and Australia?

I wonder how many are active out there now? Not counting the ones in government, like Pete 'Fishermen and Little Girl Killer' Hegseth, of course.

You'd need the gun-nut culture to go with it I guess.

Other countries also had these problems, just less it seems