“Ancient rivers show lack of plate tectonics on Mars and Titan”

This is more important than you might think:

https://cosmosmagazine.com/space/ancient-rivers-show-lack-of-plate-tectonics-on-mars-and-titan

Despite the earthquakes and other negatives associated with plate tectonics, the movement of Earth’s plates also contributes to the habitability of the planet.  (I’ll enlarge on that point, someday, in a much more substantial publication.  It’s scarcely original with me, but it will probably be new to many.)

Posted from Paris, France