Kate Mackenzie The Weekender

On Energy Source this week:

- Energy prices are already making the world a little smaller

- The cost-benefit ratios of climate chaos, explained

- Tar sands: A test of Obama’s carbon commitments

- Climate culture wars are back

- A week in which the UK thought about food security and peak oil

- Duke Energy makes nice with China – on technology sharing!

- Bjorn Lomborg answers questions on geo-engineering and the cost of mitigating climate change

- US driving demand, destroyed

- Nat gas and efficiency get some love at the Clean Energy Summit

- London oil traders are not so bad, after all