Despite endorsements of the concept of sustainable development and the linking of sustainable development with the Millennium Development Goals, progress towards the eradication of poverty has been disappointing. The underlying principles of sustainable development need to be more critically and actively applied to both poverty reduction and biodiversity conservation. While recognizing the need for better integration of poverty reduction and conservation objectives by both developmental and conservation agencies, particular attention is paid to the reasons why conservation should do better in contributing to long-term sustainable development and more immediately to poverty reduction.