A brief history of weeds and their impact -- Carbon dioxide and global warming: the green in the greenhouse effect -- An evaluation of the impact of rising carbon dioxide and climatic change on weed biology: from the cell to the plant -- An evaluation of the impact of rising carbon dioxide and climatic change on weed biology: competition to community composition -- Weeds on the farm: assessing the role of climate change and CO2 on agricultural productivity -- Invasive plants and climate change in natural ecosystems -- Weeds, CO2, climate and health: nothing to sneeze at -- Weed management: herbicides -- Weed management: the rest of the story -- Benefits from weeds -- Weeds in a time of climate.