On the surface, Tusk by Nathan M. Hurst follows a familiar formula: Earth is dying and the human race with it unless an ambitious plan to colonize a distant planet succeeds. Any experienced science fiction reader has been here before, with an Earth that has been used and abused by its dominant species to the point where it is fast becoming uninhabitable. The only way to save the human race is therefore to travel across the stars to start over on an uninhabited planet. Tusk doesn’t really break from this formula at any point, but it does throw in enough curve balls, mysteries, and a fair level of suspense that it’s an enjoyable, fun read that kept me turning the pages...

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