An invitation by the Northern Ireland Institute of Agricultural Science to speak at a talk on climate change and agriculture next Monday has given me a chance to catch up on the latest report on land-based activities published by the Intergovernmental Panel on Climate Change (IPCC) in August. We were busy launching The Currency at the time, making it difficult to digest the 1,500-page tome. Having now read chapters 2 (on land-climate interactions) and 5 (on food security), as well as the summary for policymakers in which global experts try to distill their knowledge for use by politicians, I have…