Relations between the US, Canada, and the UK haven't always been so rosy. With that in mind, what would have happened if the three had gone to war after WW1?
Did you know that GPS doesn't work underwater? Neither did we. But apparently it's a big enough problem that the United Kingdom's Ministry of Defense is working on a futuristic solution that will allow more precise navigation by the Royal Navy's submarines and surface ships, while eventually trickling down to consumer-grade mobile devices. That all sounds great, but its abilities aren't anywhere near as cool as its name – the quantum compass.