The following points have been studied in this book: 1. Characteristics of Climate in Libya. 2. Recent climate changes over time and space in Libya comparing with the global change. 3. Trends of climate occurred recently in two periods:1946-2000 as a long-term period, and 1976-2000 as a short-term period. 4. Physical and human causes of climate change in Libya. 5. Impacts of climate change on Libya. 6. Effects of climate change on desertification in Jifara Plain. 7. Manifestations and degrees of desertification. 8. The other factors accelerated desertification in Jifara Plain. 9. Projections of climate change in Libya comparing with the globe. 10. Mitigation of climate change in Libya. 11. Combating of desertification in Jifara Plain. The book includes 87 tables and 93 figures and 10 photos