On September 2, Dr. Imok Cha, a 51-year old San Francisco-based pathologist boarded a plane headed to Jeju Island, South Korea, where she was to present new findings at the World Conservation Congress of the International Union for Conservation of Nature (IUCN), the world’s oldest and largest environmental organization. But Dr. Cha’s journey to the IUCN was cut short at Incheon International Airport.