Is climate change igniting turmoil around the world? Is it contributing to unrest in the Middle East and North Africa? Will it affect our capacity to respond to crises at home? Rear Admiral (Ret.) David W. Titley speaks to Earth Focus about how climate change impacts national security. Dr. Titley served as Commander, Naval Meteorology and Oceanography Command and as Oceanographer and Navigator of the Navy. He initiated and led the U.S. Navy’s Task Force on Climate Change. He is presently Director of the Center for Solutions to Weather and Climate Risk at Penn State University.