On: Google throws open doors to its top-secret data ce...

[jbri]

Where else would that heat end up?

Fundamentally, all cooling is the process of transferring heat from one place to another.

[skrause → jbri]

The heat could be used to heat up houses or provide warm water: http://en.wikipedia.org/wiki/District_heating

[packetslave → skrause]

The problem is getting the heat from where it's generated to where it needs to go with any kind of efficiency.

[Evbn → skrause]

Google does this where possible.