The world's first cistern to use condensate from air conditioning units to flush the toilet has been launched and would save 2.4 billion litres of water a year for ...

Condensation on toilet cisterns – aka 'toilet sweating' – might be a common problem for homeowners, but that doesn't stop it being an incredibly annoying one. While it is always useful to understand ...

Hot on the heels of news that Google uses toilet water to cool one of its data centers, it has emerged that an enterprising hardware hacker had the same idea almost two years ago. Who needs a water ...