<span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"> </span> Chiara Savage Schwatz, a teenage changemaker, is working to raise money to help families in South Africa obtain Wonderbag slow cookers. These ingenious products require no energy! Families use them by bringing a pot of food up to a high temperature over a fire or stove and then by inserting the pot into the superinsulated bag to finish cooking, reducing the total energy required to cook the food.