The technique means only two or three tiny key-hole incisions are made in the cornea, with the unhealthy section removed using special instruments and the donor cornea inserted through the opening.

BBC: New eye surgery shortens recovery

Inside those arenas the key to building the next generation of tiny chips is a technique known as immersion lithography.

FORBES: Magazine Article

The key to all elections is turnout - and the relatively tiny number of swing voters.

BBC: Swing states cook up trouble for Obama

You get three earplugs made of soft, hypoallergenic silicone, with tiny filters to temper the sound, and a small cylindrical aluminum carrying case that fits on a key ring.

CNN: SHARE THIS

This should be obvious, but based on the sudden 40% jump in share price of Orexigen, the tiny obesity drug developer, apparently not: There is no way that Orexigen is more valuable following a key vote against a drug being developed by its competitor, Arena Pharmaceuticals.

FORBES: Don't Buy Orexigen After Arena's Failure

Offers of cash caused a surge of dopamine in a tiny piece of neural machinery called the nucleus accumbens--a structure as ancient as backbones that plays a key role in addiction.

FORBES: This Is Your Brain On Money