It's a gas...

Wondering what the puzzling "hydrogen" commitment was, in the Conservative manifesto's green policies? Turns out it's happening now, and locally in a major pilot at Keele University in North Staffordshire. Hydrogen is being "blended" into the existing natural-gas supply for the Keele campus. It's blended in at 20%, thus making the gas supply go further and be greener. Here we see an engineer fine-tuning one of the hydrogen-blended boilers: