A sourcebook for Transhuman Space. "In the Inner System, the worlds are closer together. Hotter. Full of promise and adventure. This book includes: * A detailed history of Mars, from the robot probes of the early 21st century, to the first manned landing in 2026, through the illegal terraforming plagues created by the Ares Conspiracy. * The uneasy truce on Mercury, where precious metal and abundant energy draw greedy eyes. * The stifling clouds of Venus, beneath which lurk a few hardy scientists, and some who are just there to hide. * New character types like the Recurver and Terraformer, new biomods, and new gengineered races. * A bestiary of genetically-enhanced animals, from smartcats to ice weasels. Plus campaign ideas, personal hardware, land and air vehicles, and more! Here is the heart of the solar system. The destiny of humanity is here. Seize the future."