Petascale data-centers in Nature [via Boing Boing]: "Every watt that you put into retrieving data and calculating with them comes out in heat, whether it be on a desktop or in a data centre; in the United States, the energy used by computers has more than doubled since 2000. Once you're conducting petacalculations on petabytes, you're into petaheat territory. Two floors of the Sanger data centre are devoted to cooling."
Do we still lack the technology to harness this heat in order to power other things? We can't possibly be this stupid.