A shift to a genuinely sustainable society will require us to challenge these negative forces, rein in the excesses of corporations and markets, and build an entirely different economy based on wellbeing for the many rather than profits for the few.

Silvia Ribeiro from the campaign group ETC Mexico points out: ‘Collapsing financial markets in Northern countries mean that banks and other investors are now looking desperately for new areas of expansion and speculation. We can see these desires leaving their mark on the Rio+20 process. The “Green Economy” now under discussion would unleash a wave of risky but lucrative new technologies such as synthetic biology, nanotechnology and climate technofixes. This isn’t about finding the best environmental solutions: it’s about creating profitable new investments.’

we cannot afford to live in a world where ecosystems are protected if, and only if, there is more profit to be made by protecting them than by trashing them.

Large polluting industries, business lobby groups and financial institutions are welcomed in as well-meaning ‘stakeholders’ – like mafia bosses invited to a meeting on reducing gang violence.

The businesses with the most wealth and power are those that have flourished in an economy based on the unrestricted use of natural resources and the exploitation of many of the world’s people. Those with the most to lose from a shift to true sustainability are therefore those with the most power to block that change.

the Stockholm Environment Institute calculated that the economic value of the oceans could be reduced by up to $2 trillion per year if climate change is left unchecked

Tom Goldtooth, Executive Director of IEN, said: ‘Systems such as “payment for ecological services” and using forests in carbon offset markets do nothing but make Mother Earth into the World Trade Organization of nature.’

According to Lucia Ortiz of Friends of the Earth Brazil: ‘Trades Unions are getting very concerned about the “green economy” agenda, because it represents a deepening of neoliberal policies, and threatens to undermine the social rights already secured by past struggles. They are working in solidarity with environmentalists, indigenous peoples, farmers and women’s rights activists, calling instead for a transition to a sustainable and just society free from the exploitation of workers and of nature.’

By bringing together political leaders, civil society groups and businesses, Rio+20 provides an opportunity to jumpstart a renewed commitment toward a more sustainable planet. This won't come easily-- and it's only possible if we're willing to acknowledge that the world has shifted profoundly since 1992.

companies are starting to see sustainability as a competitive advantage. We need to hear these stories

Syukuro Manabe, a climate modeller at the US National Oceanic and Atmospheric Administration, "the political system is not motivated to worry about the future".

"Decision-makers should learn from and scale up grass-roots action and knowledge in areas like energy, food, water and natural resources," the panel declared.