COP28: Justin Rowlatt answers big questions about event

In the United Arab Emirates, there’s a big conference going on, called COP28.

Lots of people have been trying to make big decisions about climate change.

These decisions can be a tricky business – and it can take a long time for things to happen.

But why is it like this? We put our questions to BBC expert Justin Rowlatt, who’s at the conference at the moment.