My father-in-law passed away quite unexpectedly just over a week ago. He was like a second father to me. He was young (68) and in reasonably good health (he’d been given a clean bill-of-health from his cardiologist just recently). When he passed away, I was about two-thirds of the way through an essay for the latest FQXi contest and so I dedicated it to him. You can read and vote on the essay here. I’ll miss Larry very much.
This article is interesting. There is some evidence to suggest the Vikings were able to use a `sunstone’ – a crystal that polarizes light – to navigate in fog and on cloudy days.