Search and rescue: the science of how lost people behave in the wild

With steep mountains, wild rivers, and swift weather changes, Aotearoa is a place where people can easily get lost. Although Kiwis are fortunate to have NZ Search and Rescue, these skilled and brave volunteers can't always perform miracles. To better predict what people tend to do when lost on land – and improve chances of a successful rescue – search-and-rescue scientist  Dr Robert J Koester has studied thousands of cases. He talks to Jim Mora about his life's work.