It was a couple of Christmases ago that we were last at the Science Museum, so it was about time we had a return visit for a little exhibition there. Having squeezed ourselves onto the rather busy tube Heather and I arrived to the excitement of walking down the linking tunnel and into the museum, with it’s peculiar security (are they checking bags or not? We sort of just sauntered past). There was a lot to explore, so leaving Heather to have a cuppa in the second floor cafe, I set about it.