Researchers in France announced a hydrogen fuel cell that can be used as a backup power source for mobile phones. They also created this really cool animated .gif.
Battery power is such a hugely limiting factor restricting the use of mobile applications, in particular GPS.
More at MobileCrunch.
Neilson just released some very interesting numbers on mobile data usage with their TotalWeb report.
The most significant stat:
87 million U.S. mobile users subscribe to mobile Internet services, and more than one in ten mobile subscribers (13.7 percent) actively uses mobile Internet each month.
They also have metrics about the lift that websites receive from their mobile offering. Accuweather represents the extreme example, having received a 43% increase in web users from their mobile offering. Of course, Accuweather is pretty ubiquitous in its mobile reach, it’s hard to find a US handset that doesn’t have at least one Accuweather offering.