I live in a house which is one of a terrace of three three-storey houses. The house beside mine has a gas flue expelling clouds of steam all day. This cloud passes my kitchen, dining room and a ...

Many years ago, someone — I honestly have forgotten who — told me: “Thermodynamics isn’t just a good idea, it’s the law.” Anytime you conjure up a new idea about how a heating or cooling system might ...