A free daily email with the biggest news stories of the day – and the best features from TheWeek.com Contact me with news and offers from other Future brands Receive email from us on behalf of our ...

A free daily email with the biggest news stories of the day – and the best features from TheWeek.com Contact me with news and offers from other Future brands Receive email from us on behalf of our ...

Have you ever seen a pig fly?! Learn the centuries-old origins of this animal idiom. If you say something will happen when pigs fly, it’s never going to happen. But where does that saying come from?