pushing the clouds will remain fairly constant, providing there's no dramatic change in the weather. This technique really earns its keep on underground journeys, especially to a new part of town. Simply look up before you head underground, and remember the direction of the clouds. When you emerge in a strange part of the city, look up again and you'll be able to work out which way is which from the clouds overhead. Tristan Gooley is on BBC Two's All Roads Lead Home, which started Wednesday 5 October at 2000 BST - or catch up with iPlayer . Comments Comment number 80. Rockahula 6th October 2011 - 9:18 I am what is perhaps politely referred to as 'directionally dysfunctional' whereas a good friend of mine seems incapable of getting lost. When I asked her how she does it, she said 'I just use the sun', apparently instinctively. I have always been everso slightly in awe of this apparently natural talent, but now, I might be able to give her a run for her money. If I can find her. Comment number 75. Megan 6th October 2011 - 9:00 I taught land navigation with map & compass to students preparing for public service. They all said, "But we'll just use GPS..." but soon got fascinated by the myriad of ways of finding your way around, especially once the limitations of GPS were pointed out. Always navigate by pubs and churches, even if you don't want to go into either of them: