A world of courage, bravery and adventure across profiles of Irish people who contributed influentially to making the world a better place including Michael Collins, Rosie Hackett, Katie Mullan and Tom Crean Adventurers, explorers, inventors, dreamers: for a small country Irish people have had a huge impact internationally, from helping street children in India, to saving Jewish children during World War II and exploring new worlds. From Michael Collins to Rosie Hackett, Lady Gregory to Tom Crean.