What Is a Game Changer?

We are looking at the expression game changer. Game here doesn't mean a game that you play, it's actually just the situation. And we can use it with ideas like inventions or events. A really obvious and good example is the smartphone. It changes the way we do lots of things. Let's have a look at our next headline. This is from the Telegraph. Cop 27 was a lot of hot air again.