Moon Base: NASA's Recurring Dream
Wired:Moon base? Old news.
In his hotly anticipated announcement Wednesday, President Bush ordered NASA scientists to plan for a manned "foothold on the moon." They might look through their old filing cabinets to start, because the U.S. government and its contractors have been planning lunar colonies since long before Neil Armstrong took his one giant leap for mankind in 1969.
Wired has mostly explained it to me, it should tell explain it to you too.