Leadership style in the world's most extreme workplace

At age 34, Rachael Robertson accepted the biggest challenge of her life: to lead a large, 12-month expedition in Antarctica. Two months on, she found herself having to ask the team of 120 how they managed to get through a year's supply of condoms in just eight weeks.

Robertson, a former chief ranger for the national parks service in Australia's Victoria state, talks about her book Leading on the Edge and how she developed a unique style of leadership using a technique called "no triangles".

Many people have written about their experiences in the frozen south - what's different about your story?