It has long been known that some solid materials, called metal hydrides, are capable of storing small amounts (about 1-2% of their own weight) of hydrogen at room temperature.

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They did this by putting pieces of silicon or one of a number of other solid materials inside a shoe-box-sized cavity and zapping the material with microwaves from a metal tip.

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

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This is a solid machine -- build quality and materials are fantastic for the price.

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The asteroids hit the surface hard, over and over, and since the Moon has been a solid body for most of its history, their materials stay on or close to the surface.

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Solid nuclear fuel like that used at Fukushima-Daiichi can melt and release radioactive materials if not cooled consistently during shutdown.

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The team of Professor Keon Jae Lee from the Department of Materials Science and Engineering, KAIST has developed a high performance flexible all-solid-state battery, an essential energy source for flexible displays (see paper in Nano Letters: "Bendable Inorganic Thin-Film Battery for Fully Flexible Electronic Systems").

ENGADGET: Korean scientists solve flexible battery riddle (video)

The cash-rich balance sheet enables MDC to support its solid dividend, which currently yields an impressive 5.7%, making MDC one of the top-yielding materials and construction stocks.

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