At the top, the computer makers control everything, managing customer relationships and farming out orders to their software subsidiaries in the second layer.

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It is the biggest change ever in the economy, a second layer.

FORBES: Techquotable

To increase the number of minorities in its student body, UT added a second layer to the Top Ten Percent Law at its flagship campus in Austin eight years later.

FORBES: What Will The Supreme Court Do With Affirmative Action?

The team says the brush layer protects cells from the sticky mucus and acts as a "second barrier" in case viruses or bacteria penetrate the mucus.

BBC: 'Brush' offers clues to fighting lung disease

Layer in elements of Second Life, Farmville, and a dash of the Las Vegas strip (the rare family-friendly side, anyway) and you have Chumba World.

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This is complemented by a second layer of read protection offered by the robust data hold-out algorithm in Plextor's exclusive firmware, thus allowing the drive to achieve total data accuracy even in the long-term.

ENGADGET: Plextor M5 Pro bulges SSD envelope with 94K IOPS and 540MB/s

In the past few years players have started to wear this layer of protective gear meant to feel like a second-skin in a sport that has bigger, faster and stronger athletes than ever.

CNN: March Madness, this year with more padding