The Documentary Podcast Folgen

In a special edition of HARDtalk Stephen Sackur looks back at some of the guests who have risked their personal freedom to disclose secret information. What motivates these whistleblowers?This is a bonus episode from HARDtalk, a show that brings you in-depth, hard-hitting interviews with newsworthy personalities. For more episodes search for HARDtalk wherever your get your BBC podcasts.

Dr Willard Wigan MBE creates the smallest handmade sculptures in the world. He uses high powered microscopes and custom-made tools formed from shards of diamond, hypodermic needles, and paintbrushes made from eyelashes. Willard’s talent and determination propelled him to international acclaim. His work sells for six-figure sums, and he has exhibited internationally. However, his path to success has been far from easy. As a schoolboy, he struggled with reading and writing due to unrecognised autism, his teachers dismissed him, and he endured routine bullying and racism. Willard's latest sculpture, a tribute to Charles Darwin, is crafted on the end of a pencil – a canvas rich in symbolism.

We visit the Las Patronas women 30 years on from when the young Romero Vazquez sisters first threw a loaf of bread onto the infamously dangerous La Bestia train. A train meant only for cargo, but which has become a dangerous mode of transport for more than 400,000 migrants every year. It begins from near the border of Guatemala, and along its 2000 mile journey migrants from Guatemala, Honduras, El Salvador, Nicaragua and Mexico itself cling to its roof, heading north to America. Norma Romero guides us through the last 30 years since her and her sister first made the decision to help the passing migrants.