Concepts and Approaches in Mars Exploration SpaceDaily

NASA has now essentially decided — in accord with the recommendations of most of the participants at last July’s Houston conference on “Concepts and Approaches in Mars Exploration” — that the form of the Mars program needs to be drastically changed, in the direction of extensive reconaisssance of the planet before landing sites are picked out for unmanned sample-return missions, But what should the details of the new program be?