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In Africa, waiting for blood work can take weeks, and many people don't bother getting their results. A new device could make testing in remote villages a possibility, and that could lead to drastically improved treatment. If you were concerned you had HIV (and lived in America), it would be easy enough to get some blood drawn at a clinic near your house, and wait a few days (or even hours) for the results.

Researchers at Columbia Engineering School have built optical nanostructures that enable them to engineer the index of refraction and fully control light dispersion. They have shown that it is possible for light (electromagnetic waves) to propagate from point A to point B without accumulating any phase, spreading through the artificial medium as if the medium is completely missing in space

Though it will cost just a few dollars, a new device may actually be the key to managing our aging power infrastructure and maximizing clean power. Recent rolling power outages and power failures over the past few years have highlighted just how vulnerable our power grid is to disaster. The White House just announced a $250 million loan bonanza for major smart grid deployment, but a 4-millimeter-thick chip that costs just a few dollars may actually be the key to ensuring that our aging power grid infrastructure doesn't die on us

Two companies kick off a race to market with EMV chip cards, long a staple in Europe. But with NFC payments on the rise, this seems less like innovation and more a stopgap measure. American credit card companies may be taking a page from Europeans.