One of the many hazards of dwelling off the surface of the Earth is the threat of radiation exposure – it has a tendancy to make a person ill, to say the least. However, scientists are working on a drug that could prevent radiation damage from occuring in bodily tissues; its expressed purpose is to make radiation therapies and medical treatments safer, but as Colony Worlds points out, if the agent is effective it could open up the currently deadly wastes of space to human habitation.