On the news today, I found out that there is an experimental hydrogen fuel cell powered aircraft on show at this years Farnborough Airshow. As you might imagine the Boeing FCDA (fuel cell demonstration aircraft) is not the most powerful of aircraft, but it has flown for over 20 minutes entirely under fuel cell power and it’s only emissions are water and heat. If you’d like to see it in action, here is some video from youtube. Although fuel cells are now commercially available (the fuel cells in this plane come from the UK), it will be a while before fuel cells will be used to power anything but the smallest aircraft. Even so, it does seem to be a pretty cool direction for a more sustainable future.