Obviously these stories are collected by a bot -- an algorithm or rule -- that sends stories to various pages based on internal tags. The problem is that the process is lushly duplicative and no one is in charge of the bots. I doubt any human being reviews these web pages. It's all automated. Gotta keep the costs down, y'know.
The screenshot above is from a HuffPo page. Even side by side, no one noticed.
The sites need to fix this. It makes them look like fools.