This week, One Planet goes to the glaciers of Uganda. We climb the Rwenzori Mountains with the glacier monitoring group Project Pressure, joining them for the views, the chilly air - and the discovery that not all the glaciers are where they used to be. Also on the show, we talk energy poverty by torchlight. More than a billion people around the world live without access to electricity, affecting everything from their health to their business opportunities. Mike finds out more at a new photography exhibition - in the dark.