If we [humans] disappeared overnight, the world would probably be better off [making the point that the reverse is not true]. - David Attenborough

I can't pretend that I got involved with filming the natural world fifty years ago because I had some great banner to carry about conservation - not at all, I always had a huge pleasure in just watching the natural world and seeing what happens. - I made those films because it was a hugely enjoyable thing to do. But as I went on making them it became more and more apparent that the creatures that were giving me so much joy were under threat. The fun is in delighting in the animals but if you do that you owe them something so you have an obligation to speak out and to do what you can to protect them. m3s08-m4s05

Right now we are facing a man-made disaster of global scale, our greatest threat in thousands of years: climate change. If we don’t take action, the collapse of our civilisations and the extinction of much of the natural world is on the horizon.

An eye from another world; a smell-detector, investigating the path ahead. We don't often see a snail that way, and that's because we've only recently had the tiny lenses and electronic cameras that we need to explore this miniature world. But when we meet its inhabitants face to face, we suddenly realise that their behaviour can be just as meaningful to us as the behaviour of many animals more our own size.