Why would you add more grit to a washing machine? It turns out the modern-day equivalent of washing clothes by banging them between rocks is actually effective, and it cuts back on water use dramatically.
Time magazine has revealed the incredible innovations, gorgeous gadgets and gobsmacking gizmos that make up its 50 Best Inventions of 2010.
Next year you might see your local cleaner adding just one cup of water in the washing machine. Small nylon beads do the dirty job in a laundry technology now coming to market.
A new (almost) waterless washing machine promises to change the way we wash clothes.