Herald: As well extreme weather including floods, snow, storms and droughts, there could be plagues of pests, ravaging diseases and toxic algal blooms. Power cuts, food shortages, wildfires, mass travel disruptions and wildlife extinctions are all forecast. As if that were not enough, the list of potential problems caused by global warming also includes more sewer overflows, soil erosion and landslides. More deaths and illness are likely during heatwaves, while air and water pollution could worsen and fogs...