The wind turbine in your story 'Whisker with a whisper' (News, 29 September) is a great idea, but as the rotor is almost spherical why not give it a vertical axis and avoid the complexity of providing alignment with the wind?
R Honnor,
Dereham, Norfolk
Vertical thinking
英國鐵路公司如何推動凈零排放
I am a little concerned when the OP mentions 'accelerator' and 'changing gear', as well as switching off the fuel supply???... it...