Companies increasingly factor extreme weather into their strategic planning and a report from the United Nations...is expected to underscore the heightened risks they face. Extreme temperatures, droughts, and sea level rises will all get worse unless governments make sharp cuts to greenhouse gas emissions, the Intergovernmental Panel on Climate Change (IPCC) summary report is expected to conclude...Most companies already examine how climate change and extreme weather events could impact their output, operations, goods availability and demand...[refers to Tesco, Diageo, Guinness, Smirnoff, BT Group]