If you're in the UK, you can watch on iPlayer:
<a href="https://www.bbc.co.uk/iplayer/episode/m00049b1/climate-change-the-facts" rel="nofollow">https://www.bbc.co.uk/iplayer/episode/m00049b1/climate-chang...</a><p>I hope the BBC won't remove the YouTube link, this is one of those documentaries that everyone would benefit from seeing.