Question: Can a human live on Mars? 

Answer: At the current time and technological level no humans cannot live on the red planet. The obstacles we must overcome is better propulsion systems to cut down time to reach the planet, extensive use of artificial habitats since there are is no atmosphere with breathable air in Mars as well as harsh conditions and a lack of water or vegetation, invent farming methods to be able to feed colonists as well as methods in drawing drinkable water, finds ways to cope with deterioration of human body on long space flights, find a logical way to send materials and people to and fro from earth to mars and many more.
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