Whooee! Well friends an' foes, I was just readin' about a new washin' machine that's just comin' on the market over in Merrie Olde Englande. The newfangled outfit uses a cup of water for each load of laundry and the clothes come out dry. No dryer. No clothesline. Hardly any water.
The Three R's are Reduce, Re-use and Recycle. They're listed in order of efficacy. By not needin' a whole appliance, the dryer, we're reducin'. By usin' a paltry cup of water per load, we're reducin'. Clothes dryers are big energy hogs so we're reducin' how much we use. Dryers are big and heavy and get delivered to stores and end-users by truck. We're reducin' the amount of freight on the roads and the amount of fuel bein' burned delivering dryers. These outfits don't use much detergent, neither, so we're reducin' there, too. When we don't use water, we don't need to run used water through sewage treatment plants.
Of course, nuthin's as simple as it might seem. These machines use 40 lbs of plastic chips to pound the clothes clean. After about 6 months, the chips need to be replaced. Unless there's some dang good recyclin' or re-usin' plan for that plastic, the benefits may be outweighed. I reckon it might depend on how easily accessible the water is. In drought-stricken and arid regions, it still sounds like a winner. Maybe they can make the plastic chips from recycled plastic bags or water bottles.
Here's a Reuters article about the (almost) waterless washin' machines.