Photographer David Clifford has captured the world's most dogged runners doing what they love in the most remote and unforgiving environments.
Slurping your appreciation
It's the classic way to make a klutz of yourself when you're travelling - ignoring local culinary conventions. But not with our global guide to table etiquette
Table manners are generally rather refined in Japan - until it comes to noodle soups. Slurping is the name of the game here and, as a guest, you'll be expected to join in: it shows that you appreciate the host's hospitality. When you're eating rice or soup, remember to lift the bowl up from the table towards you.