Some believe Mars is calling humanity to our next home. But the real “red planet” is a trickster, strikingly beautiful yet sweetly sinister. Even as a growing armada of instruments arrives, this small cold world continues to conceal its secrets. Settlers beware; Mars may not be what you imagine. The technological means to cross space and bring this small world back to life is just now coming within our grasp. But Mars is likely to change Humanity as much as we change it.