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Scientists in Australia have created mobile phone networks that do not require phone towers. Instead the networks are comprised of software integrated into each Wi-Fi enabled phone, which turns it into an independent router. The software shows users if the number they wish to call is within calling distance and if the phone has Wi-Fi or not. The two cell-phones create their own network. A prototype of a phone that operates on unlicensed frequencies, called the "bat-phone," is currently being developed as well.

This "mesh-based network" will sidestep common problems that in the past have interfered with cell-phone use. In Haiti, the recent earthquake destroyed the nation’s tower infrastructure and kept people from being able to call each other and confirm their safety. Can a decentralized phone network also be less expensive and more convenient for people who may be hiking, sailing, or in other remote areas? By allowing users to connect directly with one another, does that cut down on energy costs as well? What do you think?

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