The subjects of climate change and the world's continuing efforts to achieve the social and economic targets known as the Millennium Development Goals ( MDGs) will be high on the agenda when UN Secretary-general Ban Ki- moon travels to the western U.S. city of Seattle next week, his spokesperson said on Tuesday. Ban is scheduled to arrive in Seattle on Sunday for a three-day visit in which he will meet with local leaders, civil society groups, the private sector and community representatives to discuss climate change and environmental and economic sustainability, Marie Okabe told reporters. The secretary-general will also meet with Bill and Melinda Gates, whose philanthropic foundation bearing their names has worked with the UN on efforts to achieve the MDGs by the target date of 2015. The meeting will focus on advancing food security and global health, especially maternal, newborn and child health, Okabe said. While in Seattle, Ban will also receive an honorary doctor of laws degree from the University of Washington and deliver a lecture on the world's common future in the face of climate change. 