How refreshing to hear transport secretary Heidi Alexander approve plans for a second working runway at Gatwick Airport, taking on the ‘eco warriors’ she has previously attacked for blocking airport expansion. This is going to end up in the courts, and sadly the eco warriors are going to win. Because no airport expansion is compatible with the legally binding target to achieve net zero by 2050. There are only so many chip shops in the world, and the price of their used oil is soaring as demand – even at its current low levels – outstrips supply. Airport expansion is utterly at odds with the 2050 net zero target.