David Fernández wrote:

> Considering that most of the CO2 is emitted during a device fabrication
> (e.g. 79% for laptops, according to Atos), making them last long and being
> modular and repairable may be the best way to reduce the carbon footprint
> (and the increasing amount of e-waste).

We are at the stage now where a very significant limitation on the lifetime of 
electronics is the supported lifetime of the software. For most phones/tablets 
this is only 3 years (less if you don't buy them as soon as they come out)

David Lang