Then all we had to was to select a target weight and an intensity level -- the lowest making for a diet of 2, 416 calories a day that would see us hit our goal on November 15th, the highest of which kept us limited to 1, 902 calories per day, but we'd be newly svelte by June 5th.

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In 2006 China set a target of a 20% cut by 2010 of its energy intensity (the amount of energy consumed per unit of GDP).

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The technique, called Image Guided Intensity Modulated Radiotherapy Treatment uses imaging provided by a CT scan to target the tumour before a powerful but precisely shaped radiation dose is administered.

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In July new energy-intensity numbers were produced for the past four years that put China closer to its target.

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