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Investment in renewable energy infrastructure is outstripping that for fossil fuels. Investment was equal in 2008, but the balance has swung since. During 2011, globally, $40 billion was invested in fossil fuels. $260 billion was invested in renewables.  In the past year the price of photo voltaic cells has dropped by 50%. Peter Newman describes the growth of investment in renewable as exponential. He says we are living through one of the most dramatic periods in history as fossil fuels are being phased out.

"Increasingly the things we throw away have value. In a consumerist world, with diminishing resources, rubbish is being recycled like never before. The recycling industry is now worth $US500 billion a year and it employs more people worldwide than any other industry except agriculture. Trash is no longer just an environmental problem, it's an economic opportunity. We learn how the stuff of our past is helping to fuel the demand of tomorrow."

"On average, the seas are expected rise by one metre by the end of the century. This means the relocation of 500 million people whose homes and land will be inundated. There are currently no plans to manage this. Johannes Leutz is studying the best way to tackle these approaching massive problems."

Really clear and informative discussion about carbon accounting methods -how the two main methods work. Which is most effective - trading scheme or carbon tax?

"With Australian electricity prices amongst the highest in the world, more and more households are going solar. The big power companies say the Renewable Energy Target is undermining their businesses and they want it wound back. The federal government agrees, so who is to blame for the high price of power? Jess Hill investigates."