Google is working on a modular mobile phone that will eliminate the need to buy a new phone every few years. If it works, it will save money and reduce the industry’s contribution to the waste stream. Project Ara is Google’s attempt to reinvent the cellphone as we know it. Instead of a slab of glass and metal that you have no ability to upgrade, save for buying a new device, it’s an attempt to launch a phone where all of the main components are interchangeable via modules that click in and out, attaching via electro-permanent magnets. Despite being highly customizable, it will only come in three main sizes, helping to eliminate the kind of device fragmentation that currently plagues Android.