This was beautifully done and for the first time I've left one of these documentaries feeling hopeful. It's not preachy and it places the weight of the solution on the true culprits - the big companies, the billionaires hoarding the world's resources for themselves and the world's leaders. Attenborough makes it clear that one of the most sustainable solutions to global warming is the successful redistribution of wealth, guaranteeing health, education and safety to all. Often times, documentaries on Planet Earth and the global warming annoy me because they seem to place the blame on people who barely have any control over their own lives, much else something as large scale as the Earth's climate. It's time we realise that as long as poverty and class inequality exist and the working class, which amounts for most of the world's population, is systemically underpaid and explored, no one will give a crap about becoming vegan or driving a bicycle. However, people who have more money than they, and their descendants, could spend in a lifetime, need to be truly pressured and social justice needs to be restored before we can even begin to dream of a future as bright as the one Attenborough optismitcally and refreshingly offers here.