We share your concern regarding the environmental impact of palm oil. We put a lot of thought in choosing a palm oil supplier whose business practices we agree with: Tropical Traditions, http://tropicaltraditions.com/
From their website:
Tropical Traditions Palm Shortening comes from small scale family farms in South America. These farmers are certified by ProForest, which ensures that they meet strict social, environmental and technical criteria. With regard to environmental criteria, the assessments are carried out at the landscape and operational level at both the farms and processing facilities. These assessments cover environmental impact on the soil, water, air, biodiversity and local communities. The lands the farmers use are not lands that were deforested. The lands used to grow the palm fruit are lands previously used for agricultural purposes (cattle, rice, banana).