1. What progresses have been made recently (last 15 years) in new propulsion system research ? Rockets and their principle, that's 1500 years old, at least ! True that the Chinese were using them mainly for fireworks and the Europeans for weapons (what else ? ...), still to my knowledge nothing really new was applied to the present day. There was some talk in the 70-es about an atomic engine called "Nerva", then in the 80-es some scientists forgot themselves and talked about reasearch involving an ionic engine...and denied everything next day, I bet their wrists were kind of red . The present system sounds impressive at Earth scale only. At 20 km per second (meaning 72,000 km/hr), speed enough to get around the world in 2000 seconds (36 minutes) it still takes 3 years to go to Mars and back. That's crawling, man ! Decency (lower level) begins at 100 km/sec and with 200 km/sec, well, you can hope to start in May and be back by Thanksgiving, or Christmas at the outmost, without too many microG side effects.
2. Earth radioactivity is monitored from Space from years. (This is not a question). IS SUCH INFORMATION AVAILABLE ONLINE ? IF YES, WHERE? (This IS a question). I'm talking about a map display with constant readings of the local radioactivity, especially artificial sites, like power plants, research facilities, weaponry.
If not as a map, is the information available in text, like listing the abnormal only and the respective places ?