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Who needs trees when you have a building that eats smog? Struggling to breathe because of the layer of smog hovering in the atmosphere above you? Alcoa has come up with a potential solution for that most unpleasant of man-made environmental issues: the smog-eating building

Would you tell a friend if you found a $50 Lady Gaga concert ticket for $25? Ok, so GrouponLive is likely to involve far less popular artists, but Groupon and Live Nation are betting you'll still spread the word among friends--and help drum up attendance

Remember all the talk about how there's no money in social networks? Well, it now seems strangely academic

1. After the repeated and damaging hack attacks on its network, Sony has yet to bring key parts of its online systems back up. Now it looks like the PlayStation Network and Qriocity service will remain off for a longer interlude --maybe as much as six weeks in total, though Sony itself is uncertain.

These historical maps of Amtrak service show the slow death of America's passenger trains.

Online coupon database not only saves shoppers money, but also gives cash back for every purchase made. As we process applications for the 2011 Inc.

The electrical energy from the vibrations caused by a human voice can be harvested--and one day could be used to charge your cell phone. The catch

A new lawsuit could shed some light. Plus, bringing off-shore insurance tactics to the U.S., and the rest of the day's news for entrepreneurs. Each day, Inc.'s reporters scour the Web for the most important and interesting news to entrepreneurs

Apple is rumored to be adding a host of new features to its iPhone and iPad OS to make it a better rival to Android, just as new stats confirm Android is "winning" the smartphone war. What comes next? Apple is rumored to be adding a host of new features to its iPhone and iPad OS to make it a better rival to Android.

As the old joke goes, two people meet at a party. Guest 1 asks Guest 2 what he does for a living. "I'm an actor," he answers.

Why do people treat NYTimes.com like Amazon.com? Why do women love AOLNews

Leveraging synergistic brands can take a business to new and exciting heights. How can co-branding help you to reach an expanded audience with your message?

Placing second in a business plan competition convinced David Weber and Kenny Lao that they had a viable business idea. Six years and 70 employees later, they're going strong. At Rickshaw Dumpling Bar's second, soon-to-open location in New York City, boxes are being unloaded, equipment is being cleaned, and new workers are being trained

When he couldn't find a pair of quality men's shoes, George Vlagos decided to make his own.