In 2015, Joshua Coombes, a British hairstylist, took his scissors to the street to cut the hair of the homeless community in a story that is as much about hope and humanity as it is about hair. He's now the architect of the international Do Something for Nothing movement, which our regular contributing photography mentor Valérie Jardin has photographed at work in Paris and New York. Today, both Josh and Valérie share their experiences of a project that is as philanthropic as it is photographic. Also today, the mailbag is back with letters about the scale of Mother Nature, a walk along the Norwegian coastline and what does it actually look like when you stand within an electricity pylon and look up.

Links to all guests and features will be on the showpage, my sincere thanks to MPB.com who sponsor this show and the Extra Milers without whom we wouldn't be walking each week. WHY: A Sketchbook of Life is available here.