Composting toilets use aerobic decomposition to break down human waste instead of flushing it away in watery sewage. Most don't use water, so they don't need to be connected to a city wastewater ...

We often think about how planes work – how they get into the air, and stay there safely. What we think about less are the everyday functions taking place on onboard. Air circulation, heating food and ...

However, toilets do get blocked relatively often. “It’s only a tiny pipe, and people put things like nappies down – I’ve seen cutlery go down, and [soft drink cans] – they’re fascinated to see whether ...