millennials? we'll ask them and find out. stay with us. here's a question for you: if every u.s. household with a computer used sleep mode when they weren't using it how much could we save on electricity each year? up to $1 billion? $3 billion? $4.5 billion? the answer is... up to $4.5 billion. using your computer's built-in energy-saving features can generate real household savings. take the energy quiz -- round 2. energy lives here. >> test >> testmqktq >> test >> test >> east >> test >> test >> test >> test >> test >> test >> test >> test >> test >> test >> test >> test >> test >>