Data centers are, thankfully, getting a lot of attention when it comes to making them more efficient. Considering that roughly 60% of the electricity used at a data center goes to keeping the servers cool, focusing on smart cooling tactics is essential. HP has taken this to heart and has opened it's first wind-cooled data center, and it's the company's most efficient data center to date.
In this piece, HP claims that their data center is the world's first wind-cooled data center - I'm not sure just how valid this is as I have heard BT only do wind-cooled data centers!