Why I'm closing my purse for the planet

We had the first signs this week that, after a decade-long spree, we may be stopping shopping. Like-for-like sales on the high street were down 1.6% last month, the first fall in two years, according to the British Retail Consortium. Clothing and footwear had their worst showing for eight years. A new poll shows the equivalent of 28 million adults in the UK are cutting back. That's bad news in an economy built on growth, fuelled by ever-rising consumer spending.