McArdle has served as the editor of the Solar Cooker Review, a board member of Solar Cookers International and Solar Household Energy and continues to volunteer considerable time demonstrating, writing and speaking publicly about the benefits of solar cooking. In her lectures and demonstrations she argues that the widespread use of this simple technology can dramatically improve the lives of the hundreds of millions of women and children who travel miles from their villages to gather wood every week. Using solar cookers in combination with fuel efficient stoves and retained heat cookers will also dramatically reduce deforestation and CO2 emissions. Cooking and pasteurizing water with the sun can prevent millions of deaths each year from diseases caused by drinking contaminated water and by