I thank the hon. Gentleman for his intervention; that is a very good point. I certainly think that in the wake of the climate crisis we have to reassess our definition of economic migrants.
The World Bank warns that, without urgent action, 143 million people will be displaced in sub-Saharan Africa, south Asia and Latin America by 2050. As the Joseph Rowntree Foundation has rightly stated, climate justice is about not only ensuring that nobody is unfairly affected by climate change today, but recognising that future generations have rights too.