Bloomberg: A project aimed at reducing the amount of cooking fuel used by low-income households in South Africa will be registered by the United Nations Framework Convention on Climate Change, or UNFCCC, to earn carbon credits. The initiative is being carried out by Natural Balance SA, a Johannesburg-based company that manufactures a heat-retention device known as the “Wonderbag” that insulates pots, reducing the amount of time food needs to be cooked on a stove. “The project will be …