Now, as never before, is the time to re-integrate nature's economy with our own so that, instead of living dangerously off nature's rapidly diminishing capital, we draw a sustainable income from the wise management of that precious capital. Now is the time for focussed, integrated thinking and for collective, decisive action.

The final Rio+20 outcomes and goals need to acknowledge the role of animals and their welfare within food production and wider society, and make on-going political and financial commitments to guarantee that we can feed the world's growing population sustainably and humanely.

Today, international summits are best known for complex wrangling and fragile consensus. And yet the current situation is even more urgent. Greenhouse gas emissions are projected to rise by 50% before the end of the century, resulting in a global average temperature increase of between 3°C and 6°C.

World leaders need to recognise the importance of the environment in tackling the problems facing the global economy, campaigners urged today. And ...