During the 20th century, the rate of resource use has increased twice as fast as the increase in global population. Now, resources are being consumed at an even greater rate and are on pace to triple by 2050, the report calculates. Except there simply aren’t enough resources left on the planet to manage that. The average person in Canada or the United States currently consumes 25 tonnes of key resources every year, while a person living in India and in most African countries uses just four tonnes, the report found.

Developed countries citizens consume an average of 16 tons of those four key resources per capita (ranging up to 40 or more tons per person in some developed countries). By comparison, the average person in India today consumes four tons per year. With the growth of both population and prosperity, especially in developing countries, the prospect of much higher resource consumption levels is “far beyond what is likely sustainable” if realized at all given finite world resources, warns the report by UNEP’s International Resource Panel.

“It’s going to have huge resonance around the world,” Barlow said of the campaign. “It’s going to start first with these southern countries trying to protect their land and their people from exploitation, but I think it will be grabbed onto by communities in our countries, for example, fighting the tarsands in Alberta.”

“We need a revolution,” he told a panel at the World Economic Forum in Davos, Switzerland, on how best to make the global economy sustainable. “Climate change is also showing us that the old model is more than obsolete.”

In the previous episode, really the main driver in food commodities was cereals. This time around, look at sugar and oilseeds.