A well-sourced article on an interesting topic with a terrible click-bait title and contrived narrative. The Earth's core is not doing anything weird, scientists are just working to understand how it behaves. The title and general tone of the article make it sound like something sinister is happening. It's not. Everything is normal. The subject matter is great but this narrative style does not suit the National Geographic.

This is a well-researched article, with the author being able to explain scientific research in terms understandable to non-specialists. The author makes the point to speak to many different sources, in this case geologists, and attempts to give a balanced view of the various explanations researchers offer for their differing findings. The different explanations are more or less given equal weight and arguments for and against them are offered too. The author stresses the uncertainty which still remains within the field and quotes another researcher's opinion on why this is the case. Unfortunately, the title is sensationalistic and does not give an accurate representation of the article's content. Earth's core is not suddenly "doing something weird", but rather we do not understand Earth's core fully yet.

I enjoyed this article, it's displaying arguments from civil disagreements of how to interpret the data.

Inerestring article that also touches on what the skeptics says about the data.

Amazing article that dives deep in the mysteries of the earth and explores the current leading theories around the speed of revolution of the Earth's core. Well sourced and critically discussed.

An incredibly well sourced article, answering many questions readers might have about the new findings implications. The author is honest about how little is known at this time, and does well not to speculate or over sensationalize the story.