My Croatian granddad, Cedo, is a meteorologist.
Meteorologists forecast (predict) the weather.
It used to be quite easy for him and his colleagues to use their knowledge and experience to predict the weather.
But as the weather changed, they have found it harder to accurately forecast.
There are people in the world who don’t believe that the weather is changing. This makes my granddad cross as he can see it in his work.
My granddad knows that the earth is getting hotter. This is called global warming. We can do something about it, but we need to act really quickly.