Population collapse is the greatest problem facing humanity, says demographer Paul Morland

NTD's Lee Hall sits down with demographer and author Paul Morland to discuss how the lack of births and deaths is changing the world we live in. Paul talks about developed societies moving towards societal collapse. As people become more educated, wealthy and comfortable, their priorities change and family sizes shrink. He also talks about the immigration situation in Britain, the fall of Japan, and why the whole world will become more African by the end of the century.