This week, the UK had the starkest warning yet of the imminent energy shortage.

In the next few weeks alone, we will lose around 10% of our capacity to generate energy, as old coal and oil-fired power plants close. The chief executive of the energy regulator Ofgem, Alistair Buchanan, predicts a near crisis. We could start to see blackouts as early as 2015.

A new global food report suggests we waste between 30% and 50% of all food that is produced. The report from the Institute of Mechanical Engineering suggests very different profiles of food loss across the world.