From Energy Efficient Ethernet to a company's own supply network, there's a lot that networks can do to reduce a company's environmental footprint, says 3Com's Matt Walmsley

Is there room in the market for a specialist builder of data-centre servers? Rod Evans, the boss of Rackable Systems' new European operation, clearly thinks so

The direct model did away with the old way of buying PCs. Now it's time to apply cloud economics to the data centre and slash the management costs, says Dell's Raj Kushwaha

Done properly, going green means lower costs, not higher, says Dave Cox, operations chief at Blue Coat and the man driving the company's BluePlanet eco-programme

The GNU founder claims that free software should be more sustainable than proprietary - and argues that the UK and EU are missing the ethical issues in software

BT has an impressive record in reducing its carbon footprint - and helping others do the same. But complex carbon accounting might stall its wind farm plans

Cisco may have designs on the data centre, but Brocade plans to use a power-saving message push into Cisco's home ground

Sustainable IT departments will have to weather some big changes. One of the largest is the move to virtual servers. What, we asked Citrix, is so green about virtualization?

IT is a serious polluter - but it's also the key to reducing carbon outputs, says Dr Hamadoun Touré of the ITU. We can use technology to slash our emissions, and still save the third world, he says. And while we are about it, why does every phone ship with a new power supply?

The IT industry has a poor record of wasting energy in data centres, says server maker Sun Microsystems. But the company wants to make amends: it has attacked the source of the problem, and rewritten the rules for cooling and power.