> since the atmosphere and magnetic field of Mars provide little shielding, the martian surface is bombarded with high-energy radiation comparable to that in fr

> since the atmosphere and magnetic field of Mars provide little shielding, the martian surface is bombarded with high-energy radiation comparable to that in free space. Thus, our intrepid explorers or settlers must stay under a few feet of dirt most of the time if they plan to stay long and remain healthy. The fantasy of domed cities under the martian sky thus shrinks to pressure vessels buried under martian dirt. That is a big problem, but it is not specific to Mars. The author seems to prefer settlements in space, so I tried searching the site to find out how the space stations are to be shielded from radiation, but failed.