Read our C2I2020 winners supplement

What a fun demonstration. I wonder if they were brave enough to be in the car when it was first turned over. Racing fan cars would be an interesting...

This is a little worrying. There is a concentration on power density which is not a major consideration on domestic systems. What really matters is...

Hi Martin, a wind turbine blade functions very much like an airplane wing in a climb. Obviously in one case the air is moving and the other the air is...