Last year, some of the biggest fires in recent history burned through parts of Indonesia. The fires sent huge clouds of smoke across Indonesia and its neighbors. They also produced large amounts of carbon dioxide. Studies have linked increasing carbon dioxide levels to rising temperatures in Earth’s atmosphere. For years, Indonesian farmers and businesses have cleared land for agriculture by setting fire to fields and undeveloped areas. This year’s fire season is to begin soon. But measures to limit the burning are now in place. One of Indonesia’s top exports and most popular agricultural products is palm oil. It is used in snack foods and cosmetics. Palm trees grow mainly in what was once peatland wet areas where dead organic material is plentiful.