Is green IT an illusion?

This autumn, PC World will launch its first "green" PC, and surely herald a wave of such products to hit both home and business. Is this the signal that it is time to clear out the techno-junk and invest in a new generation of ecologically sound hardware? Even if there is a lot of "green washing" of products that would have come out anyway, it would seem that the environmental benefits are clear cut. Unfortunately, however, it is more complicated than that: most of the green promises on offer centre on energy usage, and this is only the tip of the iceberg when it comes to IT's ecological impact.