Sometimes, an answer to a technological conundrum is there, quite literally, under our noses. Take toilet flushes for example. For those involved in water conservation, toilets are a headache. Even specialised ‘low-flow’ flush hardware can use 1.6 gpf (gallons per flush) – that’s approaching 6.1 litres. [Reference leglislation see : 42 U.S.C. § 6295 : […]