You’ve probably noticed it a hundred times but never really thought about it– those two buttons on your toilet flush. One small, one big. You press whichever feels right in the moment, without ...

You see it daily, several times, but never really think about why it’s like that. The buttons on your toilet flush—why are there two buttons, a big one and a small one? Are you pressing the correct ...

Indian households can significantly cut water usage by mastering their dual-flush toilets. Pressing the smaller button for liquid waste and the larger one for solid waste can save up to 20,000 litres ...