时代杂志评出2014年25项最佳发明（下）

If 2013 was the year in which selfie became a buzzword, then 2014 was the year selfies became a cultural phenomenon. Look no further than a recent Pew report, which found that at least a quarter of Americans have shared a selfie on a social-networking site (including Ellen Degeneres, Kim Kardashian and President Obama).

Sensing a new market, several companies have launched devices designed to streamline the selfie-taking experience. The selfie stick (produced by multiple brands), which enables users to position their smartphone beyond arms’ reach to get better photo angles, “adds genuine value,”says Van Baker, a mobile tech analyst at the research firm Gartner. “I’ve seen a lot of people using it.”

What makes the Ebola virus so frightening is its speed. In a matter of days, it can pump out enough copies of itself to overtake the immune system. But the Hemopurifier, a specially designed cartridge that attaches to a dialysis machine, can tip the balance back in the body’s favor: its lectin filter attracts Ebola viruses and sucks them from the blood as it flows through. It’s been used only once, on a patient in Germany, but it did the trick—effectively curing his Ebola infection. In the future, doctors hope similar tech could be used on viruses like hepatitis.

Americans spend more than $11 billion each year to blast their homes with air-conditioning, releasing 100 million tons of carbon dioxide into the air. Experts say a sizable portion of that is waste. IT consultant Garthen Leslie realized as much while driving to work last summer in Washington, past rows of empty-looking houses with humming window units that could not be turned on or off remotely. There had to be a better way. “So I sent an idea to Quirky,” he says, referring to the GE-backed site that turns people’s concepts into creations. Four months later, they had a prototype.

The Aros air conditioner, which has sold nearly 50,000 units since its May 2014 release. For one thing, it’s elegant, with a sleek white exterior that’s almost Apple-esque. It’s smart too. Thanks to a companion mobile app, Aros can track owners’ movements via GPS and turn itself on and off depending on their proximity to home. It also tells people exactly how much money they’re spending to cool their residences.

For 23 hours a day, the 200 inmates in solitary confinement at Oregon’s largest prison see nothing but a tiny, white-walled cell—an experience some research suggests can heighten mental illness and make prisoners prone to suicide attempts and violence. Last year, officials began letting some of them spend their free hour in a first-of-its-kind “blue room,” an exercise space where a projector plays video of open deserts, streaming waterfalls and other outdoor scenes. That imagery, says creator Nalini Nadkarni, who studies how nature affects behavior, is designed to calm prisoners, “much in the way we walk through a park” to relax. Inmates have responded so well that guards now use blue-room time as a way to pre-empt bad behavior.

Like many kids, Pramod Sharma’s daughter loves the iPad. But “when her face is glued to the screen, six inches away, all day long—I wasn’t too happy,” he says. So the ex-Google engineer and his former colleague, Jérôme Scholler, devised a way to bring virtual play back into the real world. Osmo’s “reflective AI” attachment enables the iPad camera to interpret physical objects—allowing kids to mimic an onscreen pattern with colored tiles, for example, and get rewarded for doing it correctly. “Many kids can play at once,” says Sharma, “so it becomes more interactive and imaginative.”

This basketball comes embedded with nine sensors and a Bluetooth chip that sends performance data to a mobile app—allowing players to measure, say, the arc of their jumpshot. If something’s off during game play, the voice of a coach (via the app) can even implore you to “go faster” or “snap your wrist.” “We get excited when we see someone improve,” says Michael Crowley, whose company, InfoMotion Sports Technologies Inc., makes the 94Fifty Smart Sensor. And apparently, that’s happening a lot: Crowley says InfoMotion has sold close to 100,000 balls.

“Edible wrapper” sounds like an oxymoron—unless you’re WikiFoods founder David Edwards, who has devised a way to encase yogurt, cheese, ice cream and more in shells strong enough to hold their shape (in water, heat and cold) until you take your first bite. The secret lies in science: Each shell is made of particles of dried fruit or other natural substances that are tiny enough to be electrically attracted to one another; they are combined with calcium and sugar to strengthen the form.

“There are so many artists” making beautiful works on and for computers, says digital artist Jake Levine, referencing the burgeoning Tumblr community (among others). But putting that art on physical walls has been nearly impossible. Levine’s Electric Objects, the sleek, 22-by-13-in. flatscreens are wired specifically to display art.

Studies have shown that girls’ career ambitions can be heavily influenced by their playthings. But when moms Dawn Nadeau and Julie Kerwin started searching for female action figures that were athletic and empowering—as opposed to dolls like Barbie, most of which cannot even bend their limbs—they were dismayed to find … none. So they designed and commissioned a firm to build their IAmElemental series of action figures. Each figure embodies a different “element” of heroism, like persistence or honesty. “The idea that girls could save the world—that’s a very powerful fantasy,” says Nadeau.