Space agencies preparing for 3-year round-trip journey to Mars

Getting to Mars is a journey that could involve 140 million miles of travel. Astronauts on a Mars mission will be subjected to extreme conditions requiring problem-solving skills and creative thinking. How are we preparing for a Mars mission?
Read more: http://www.digitaljournal.com/tech-and-science/science/space-agencies-preparing-for-3-year-round-trip-journey-to-mars/article/543897?source=Snapzu