One specific material he is working on may be suitable as a replacement technology for photovoltaic cells, one that promises to be one-hundredth of the cost of existing solar cells, which can overcome whatever efficiency loss it represents.

FORBES: Intelligent Design Comes To Inorganic Matter

Rather, replacement components would be generated as needed from feedstock material.

MSN: Future astronauts may rely on made-in-space parts

This week's accord could result in little more than a return to a 1994 pact between America and North Korea, by which North Korea froze its operations at Yongbyon in return for fuel oil shipments and an agreement eventually to provide replacement nuclear reactors that could less easily be used to make weapons material.

ECONOMIST: Some cheer over North Korea