The novel “The Long Mars” by Terry Pratchett and Stephen Baxter was published for the first time in 2014. It’s the third book of The Long Earth series and follows “The Long War”.
The explosion of the Yellowstone supervolcano devastated North America with global consequences. The migration to other worlds of the Long Earth had a remarkable peak, bringing further changes to humanity. A new expedition aims to explore the Long Earth by going further than ever, finding worlds that are profoundly different from Datum Earth.
Years after the catastrophe, some children start showing intellectual skills superior to those of any human being. Growing up, they start working together and this causes the first serious reactions from common humans. The options under discussion are different but there are some people who want the genocide of this new species.