Justin Rowlatt, chief environment correspondent

Justin has travelled all over the world for the BBC and seen evidence of climate change everywhere. He says it is the biggest challenge humanity has ever faced. Tackling it means changing how we do virtually everything. "We are right to be anxious and afraid at the prospect, but I reckon we should also see this as a thrilling story of exploration, and I'm delighted to have been given the chance of a ringside seat as chief environment correspondent."