Insanity, it is a general, popular and legal term defining behaviour influenced by mental instability. In modern usage, it is most commonly encountered as an informal, unscientific term, or in the narrow legal context of the insanity defense . Albert Einstein once said that the definition of insanity is: doing the same thing over and [...]

When car manufacturers design induction systems they are concerned mostly about getting air that is perfectly clean, and that there is no noise from the filter. Well, that is not quite true, because on sporty models, some noise builds up with engine revs – because people like this noise. Nowadays, there is a big market [...]