One technology highlighted by NASA is solid freeform fabrication, a process that could be used to support fabrication and repair of large space structures, spacecraft primary structure and replacement components.

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

Mr Diallo has been sent to fill the vacuum left by the death of the previous mediator, Alioune Blondin Beye, and to steer the peace process back on to solid ground.

ECONOMIST: Angola

Mr McGuinness said he had no concerns about the political process, which he said was "rock solid".

BBC: Ministerial Offices

Petroleum coke is the solid black gunk left over at the end of the oil refining process.

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Once the fermentation process that creates the methane is finished, the remaining solid matter, or "digestate" is used as an organic fertilizer for crops that will later be used as feedstock for the animals.

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The process turns digital models on computer screens into three-dimensional solid objects using plastics and other materials.

WSJ: Public-private partnership pushes '3-D printing'