BBC Host Oli Martin Filmed Shirtless in Freezing Conditions With a Thermal Imaging Camera to Visualize Heat Loss

Host Oli Martin strips down shirtless in the freezing Cairngorm mountains in the Scottish Highlands and is filmed using a Selex Merlin thermal imaging camera in a clip from the BBC's YouTube series Earth Unplugged. The dramatic thermal video shows how the heat leaves Martin's body once it is exposed to the cold air as he narrates the experience.