What we learned this week

For many households, including mine, the single biggest energy user is the fridge, so energy efficient fridges can make a significant difference to bills and to emissions. Could governments run a scrappage scheme for old fridges, or discounted fridges for low income households to help cut their energy costs? I was wondering about this, and discovered that Kazakhstan have already tried it.

The Dow Jones Industrial Average tracks the performance of the biggest 30 companies in America. Exxon Mobil ...