EnvironmentHigh-tech vertical farming is on the rise – but is it any greener? Online supermarket Ocado is investing £17 million in vertical farming in the UK. The approach uses no pesticides, but it can still have a hefty carbon footprint Analysis
EnvironmentAmazing Arctic images show how ice melt is creating the new north A photo project is charting changes in the Arctic, such as ice sheet melt, the lives of nomadic people hit by rising temperatures and growing military interest in the region Regulars