The Long Mars

The third novel in legendary author and Discworld creator Terry Pratchett and award-winning science fiction writer Stephen Baxter's 'Long Earth' series, which Io9 calls 'a brilliant science fiction collaboration.' 2040. The Long Earth is in chaos. . . . The cataclysmic Yellowstone eruption is shutting down civilization. Whole populations flee to the relative safety of myriad stepwise Earths. Sally Linsay, Joshua Valiente, and Lobsang have all been involved in the perilous post-eruption clean-up. But Joshua faces a crisis close to home. From a long childhood hidden deep in the Long Earth, a new breed of young, super-bright post-humans is emerging--but 'normal' human society is turning against them, driven by ignorance and fear. For Joshua, caught up in the conflict, a dramatic showdown seems inevitable. Meanwhile, U.S. Navy Commander Maggie Kauffman embarks on an incredible journey, leading an expedition to the unexplored limits of the far Long Earth. And Sally is contacted by her