Cloud computing goes green underground in Finland - washingtonpost.com

HELSINKI (Reuters) - In the chill of a massive cave beneath an orthodox Christian cathedral, a city power firm is preparing what it thinks will be the greenest data center on the planet.

Excess heat from hundreds of computer servers to be located in the bedrock beneath Uspenski Cathedral, one of Helsinki's most popular tourist sites, will be captured and channelled into the district heating network, a system of water-heated pipes used to warm homes in the Finnish capital...