Forum for the Future is running an event for some of our partners in the built environment almost exactly one year on from this time last year. I’ve just reviewed the stuff we shoved at them a year ago – on climate change, energy security, peak oil, spatial planning, inequality, prospects for economic growth, and so on – and it’s quite mind-boggling to see how much the world has changed in the last year! And because the focus is on the built environment, I didn’t even mention things like food security which has “suddenly” soared up the global agenda.

I put ‘suddenly’ in those ironic speech marks simply because one of the most shocking things to have emerged in all the panic calls uttered recently by the UN and others is the degree to which this current crisis has been predicted by experts time after time – as politicians disregarded global food agendas, and research budgets were cut and cut again in the times of plenty.

UN Secretary General Ban Ki-Moon has now summoned world leaders to an emergency summit in June, and set up a new Taskforce to put forward ways of dealing with the crisis. The World Food Programme has said it needs to find an additional $750 million to cope with the combination of growing numbers of people in need and rapidly rising food prices.

So, food security is back on the political agenda. Climate change is omni-present. Peak Oil is rising. The credit crunch is the new player on the block. Resource wars are looming. Rainforest destruction just won’t go away. Species loss is as bad as ever, but no one cares – for now. Water shortages are chronic.

But much, much more worrying are the linkages between all these notionally “separate” phenomena. The synergies, feedback loops, interdependencies. At long last, people are starting to make the connections – and are even beginning to link all those separate symptoms back to their root cause: today’s literally insane notion of getting richer by trashing the planet and screwing the poor.

Don’t hold your breath, but pretty soon you might even hear one or two of them start talking about population. And then you’ll know revolution is on the way.

You can read more from Jonathon Porritt's blog at www.jonathonporritt.com