Western Digital is claiming to roll back global warming with a new hard drive that saves 4 or 5 watts over the competition. Big deal. Turning off a single light bulb will save 60 watts, and no body excapt your mother thinks you can stall off global warming by turning off lights when you leave the room. Four or five watts will make a laptop's batteries last a bit longer, but it won't save the world.
BTW, I got a foot of new snow on my porch, it's zero out side, and another foot of snow is expected tomorrow. Must be global warming.