Linguists have a lot of largely untested theories. Borrowing a tool from ecology, researchers built a model that didn't look for one worldwide explanation.
English will remain an official EU language – even after Brexit – and this will impact the way it evolves.
Britons are notoriously bad at learning other languages. Here are some of the things that they find difficult.
This explains why some aspects of English can be hard to learn for speakers of other languages.