Segway inventor's next endeavor

Famed inventor Dean Kamen is teaming up with ... Coke.

By Brian Dumaine, senior editor-at-large

FORTUNE -- Dean Kamen, the New Hampshire inventor who brought us the portable dialysis machine and the Segway, is ramping up a new technology that may put a dent in one of our most pressing problems: providing clean drinking water to the billion plus people around world who lack it. Called the Slingshot (after David's tool for MORE

The Japanese app that is storming the world

Line—a messaging app akin to Skype—is a rare hit digital export from abroad.

By Michael Fitzpatrick, contributor

FORTUNE -- What do you get if you cross emoting, goofy manga characters with free messaging and calls? Japan's only export app hit—called Line—which recently hit its 100 millionth download.

"Faster than email, more creative than text and cheaper than calling, what's not to love," says one Spanish fan on the company promotional video. He's not MORE

Making the wearable tech revolution a reality

Wearable technology was all the rage at CES, but companies are still trying to figure out exactly how to convince consumers to wear tiny computers around the clock.

By Olof Schybergson, contributor

FORTUNE -- The key tech battle of the current decade will be about things we wear. Technology is crawling out of our bags and pockets and onto our bodies in the form of wearables. An increasing number of gadgets are MORE

1 minute and 2 seconds of Ashton as Steve

First clip from upcoming Steve Jobs biopic is well ... you decide.

FORTUNE- It's here: the first footage from the upcoming movie Jobs, courtesy of Entertainment Tonight. You can view a little more than one minute of footage here (embedding isn't working). Ashton Kucher stars as the famous co-founder and CEO of Apple. Actor Josh Gad plays co-founder Steve Wozniak. The movie is coming out on April 19. We'll reserve judgement MORE

Behold the 5-inch iPhone! (Maybe)

A painstaking—and brilliant—analysis of what an even larger iPhone might look like.

FORTUNE -- Is a larger iPhone coming or not? Nobody outside Cupertino really knows. But that hasn't stopped all manner of Apple watchers from speculating how many might be sold or what they could look like.

Why? Samsung's 4.8-inch Galaxy S3 was the bestselling smartphone during third quarter 2012. Barclays estimates shipments of gadgets with displays 5-inches or larger will MORE

Cracking the mobile ad market

Meet Millennial Media, the most important advertising company you've likely never heard of. Its technology has the likes of Google and Apple paying attention.

By Verne Kopytoff, contributor

FORTUNE -- Paul Palmieri, chief executive of Millennial Media, had a point to make about the future of his fast growing mobile advertising company. Staying independent is perfectly fine for his business, he said, never mind the constant speculation about it being an acquisition MORE

I got hacked (and so can you)

Think you have a fool-proof security regime? So did I.

By Ryan Bradley, senior editor

FORTUNE -- My password security system is top-notch to the point of being borderline crazy: On or around the first of the month I change all the big ones—Gmail, Twitter, LinkedIn, Facebook, Amazon, Apple, Paypal, and all my banks (plus Mint.com). My aim is never to repeat, but I riff. I turn phrases around, pull numbers from MORE

Steve Jobs and the art of the curt email

New details from a court case show he was indeed the master.

FORTUNE -- Steve Jobs' emails. Direct, pithy, and rare, they came to take on an oracular quality during his tenure as Apple's chief executive. His responses to users' requests and complaints about everything from the poor reception on some iPhone models to waterlogged MacBook Pros became mythic. "No" and "yep" were common responses to even the most in-depth questions. These epistles even spawned MORE

Natural gas is just what clean energy needs

Exporting natural gas would be more likely to displace coal both at home and abroad, resulting in a lower net carbon emissions overall.

By Arno Harris, contributor

FORTUNE -- America is awash in natural gas. Prices are low and by some estimates we have a 100-year supply of it. Today we produce more than we use so why not export it? By doing so, natural gas could act as the driver of MORE

When suborbital travel happens, he'll be flying

A conversation with a commercial space pilot.

By Peter Elkind, editor-at-large

FORTUNE -- When Fortune caught up with former NASA astronaut Richard Searfoss, the chief test pilot for XCOR Aerospace, he was traveling from his Tehachapi, California base to a Christmas family gathering in Idaho. His wife was behind the wheel, piloting their Toyota Highlander at a distinctly pedestrian 70 miles per hour (the speed limit was 75). As Searfoss, now 56, MORE