Can you offset the impacts of a new road carving up a valley? Once you destroy woodland for a motorway service station, can you replace what you lost? How about fracking - can you offset the impacts of a shale gas well? These are all questions we will need to consider if the EU goes ahead with new legislation permitting biodiversity offsets. The EU is holding a consultation on how to achieve no net loss of biodiversity, and asks questions about biodiversity offsetting.