Once used to defend Britain’s shores against Napoleonic France, the Ordnance Survey’s detailed maps are now essential for tracking and adapting to climate change. “I would argue there is no clearer way to see the impact of climate change than looking at a traditional map,” Tom Gray, a utilities and transport expert for Britain’s national mapping agency, told AFP. “There’s a noticeable change in habitats, mainly because of human intervention … but also the direct impacts of climate change, especially around waterways,” said Gray. – Climate emergencies –Many services rely on OS data to react to climate emergencies. “I think everyone’s going to have to start taking (climate change) seriously,” Jones added.