Can't say I'm a fan of a prestigious scientific outlet adopting clickbait style headlines. This is the second one from the same place on the front page right now.
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You need to realize you're reading editorial content, and not a review or research paper.
"Researchers are trying to work out why."
"Here's what 4k researchers think."
It's possible that clickbait is technically the wrong term but it's a pattern that I strongly associate with those practices. It's an idiocracy-esque development. Learning that it has spread to the likes of Nature is saddening.
I was tempted to remove the "What does this mean for our health?" part of the title, but I thought that such a large edit might be against HN policy / too much editorializing on my part.
In any case, I thought the article was worth posting because it's a nice intro to a area of recent progress in biology that not a lot of folks are aware of.