We took the kids to the National Railway Museum in York yesterday, in part to sate the train-mania of the littlest one. The Museum has a full complement of Dyson Air Blade hand dryers in the loos, and each one had a big sign above it claiming the dryer was responsible for 72% less carbon per hand-drying.

What was really impressive was the small print. It pointed out that the study had been commissioned by Dyson, citing the title and authors, that it had been accredited by the Carbon Trust and even that it used the US energy mix in its calculations.

That’s incredibly detailed for a hand dryer in a museum! Good effort.