The BBC's US08 bus is travelling coast to coast to find out what Americans are really saying about their country and this election. Click on the map to follow the journey.
Firefox only (Windows/Mac/Linux): Firefox extension Geode adds experimental geolocation features to your browser. We've already seen how a location-aware iPhone can change your life, and the idea is very much the same with Geode.
To photograph the Northern Lights (Aurora Borealis), follow these instructions and tips to get the best photos. Try different settings shown here and learn what's best for taking pictures of the Northern Lights in all their nightly beauty.