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Safer Molecular Manufacturing Through Nanoblocks

(Copied here for 'safe-keeping', from the CRN Taskforce on Nanotechnology) Those responsible for the safety of a nation — leaders and military and police forces — might be hard pressed to deal with a world in which any weapon or dangerous device could be manufactured in large quantities at the press of a button, at the same time that economic and social norms are being overthrown by rapid change. We can expect that — by default — authorities will want molecular manufacturing (MM) to be tightly restricted — kept out of private hands, and limited to the few nations that initially have it. That approach might provide some added security — or it might simply create such incredible pent-up demand that any barriers and restrictions are quickly overcome by black markets, intellectual property piracy, rogue-nation programs to duplicate MM, etc. This essay attempts to chart a middle path for the early years of MM availability — one that allows most of the benefits of MM to be wide...
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Improving Mars Direct

It should be possible to improve upon Robert Zubrin's " Mars Direct " plan: Zubrin's plan is good, but we could make the mission much safer. There are two main potential failure points in Mars Direct that are risky for humans: Will the crew vehicle be able to aerobrake into orbit and land; and will the ERV be able to lift successfully from Mars? Reduce both risks by simply not landing humans in the first few missions. Instead, land robots to be tele-operated from a Mars orbital station. Eliminating the mass of the lander and aerobraking shield allows the ship to arrive with enough fuel to get into Mars orbit using the 3rd stage rocket. Even better, use two rockets, providing backup, and to act as each other's counter-balance when rotating for artificial gravity - no need to discard the 3rd stage rockets. Instead, the crew can return to Earth on the same ship(s) in which they arrived. They just need fuel for the return trip - and Zubrin's approach can be us...
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Proposed Presidential Vision and Plan for NASA

Proposed Presidential Vision and Five Point Plan for re-directing NASA to more sensible, efficient and far-sighted human-in-space operations : 1) Challenge NASA with a new PLAN FOR SPACE - to begin delivering robots, supplies and equipment to the moon within TWO YEARS. The robots should be simple but dextrous, durable and repairable - in order to carry out a mission of long-term exploration, research and development focused on establishing industrial production capabilities on the moon. Since the moon is relatively close, the robots will be directly (though remotely) controlled by human operators on Earth. Controlling the robots will be tedious and slow, due to radio communication delays between Earth and the moon. But one remote controlled robot, operated in 24-7 shifts, should be able to accomplish at least as much per day as one space-suited human, and keep at it for years (with repairs), at roughly 1/100th the cost of a "manned" program and with no peril to human lif...
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