Moon1 vs. Moon2: Differences in U.S. manned lunar programs

NASA is preparing to return astronauts to the Moon beginning around the year 2020. As its April 8, 2009 article states in its title “Beyond Apollo: Moon Tech Takes a Giant Leap," there really is a big difference in how we did it back in the 1960s and how we will do it in the 2010s.
Moon1 vs. Moon2: Differences in U.S. manned lunar programs