Yes, government negotiations have not reached agreement on a way forward. So, go beyond that and crowdsource. Develop a global index based on the indicators you mentioned in the blog - I would also include extinctions and there may be others, such as extreme and unlikely weather events. Get others to develop local versions. Make it a simple visual (like a clock, a chart) or number that indicates change. Then do everything you can to send it viral. It should be able to be tweeted, displayed as a widget on newspapers and web pages. Ideally it would become as ubiquitous as the weather prediction - most people appreciate that it’s not 100% accurate but it gives you a good idea of whether to wear a t-shirt or take an umbrella. P.S. It has to be SIMPLE but based on solid data.