Scientists say measurements taken by the US space agency’s Mars Odyssey craft prove that a human mission could survive on the Martian surface. | Instrument data show radiation around the Red Planet might cause some health problems but is unlikely to be fatal. —Richard Black
—Humans ‘could survive Mars visit’ (BBC)

Also interesting in this article: Mars seems to have too much surface water to be sustained in equilibrium. It may be coming out of an ice age.