The Least Developed Countries (LDCs) are a group of 49 of the world's poorest countries. They have contributed least to the emission of greenhouse gases but they are most vulnerable to the effects of climate change and have the least capacity to adapt to these changes. Adaptation to climate change has become an important policy priority in the international negotiations on climate change in recent years. However, it has yet to become a major policy issue within the developing countries, especially the LDCs. These reports focus on two LDCs, namely Bangladesh in Asia and Mali in Africa, where experience shows that although much has been achieved in terms of describing and analysing vulnerability to climate change and identifying potential adaptation options, there remains much more to be done in terms of mainstreaming adaptation to climate change within the national policy making processes in those countries.