Mars has all the resources available to support the development of Earth independent colonies, but it is going to take some initial input from Earth to get it going. Once the basic equipment is there, it should become increasingly easy to terraform the planet by reducing the iron oxide and obtaining oxygen. Hydrogen protons can be trapped coming in from the sun and these combined with the oxygen to produce water. This single operation can yield large amounts of water in a relatively short time. But in order to keep it from becoming disassociated hydrogen and oxygen, an artificially created planetary magnetic field will have to be created. Alternately, the water can be stored underground. The iron reduced by a solar method can be used for all kinds of construction. Shelters can be built in order to grow food, but as Mars only receives about 1/4 of the solar intensity of the Earth, the available light will have to be concentrated. Alternately, it can be collected by solar power and the electricity so generated can be used for strong artificial lighting. Over time, man should be able to live independent form any Earth support.