Washington, United States ---South Korean President Yoon Suk Yeol kicked off a six-day trip to the United States with a tour of a NASA facility Tuesday, ahead of joining President Joe Biden for a visit to the Korean War Memorial in Washington and a formal state visit at the White House. Yoon toured NASA's Goddard Space Flight Center just outside Washington along with US Vice President Kamala Harris. In remarks to reporters, both said there was particular emphasis on using satellite technology to track and respond to climate change. Yoon laid a wreath at the Tomb of the Unknown Soldier in Arlington National Cemetery and later Tuesday he was set to join Biden at the Kor...Keep on reading: South Korean leader starts US visit