The FAA ordered the ground stop because of the fog that settled into the Denver metro area. The ground stop was in effect until 6:45 a.m. Tuesday. It went into effect at 5:45 a.m. Tuesday.

PYEONGTAEK, South Korea — The yellow dust that blows in from China’s Gobi Desert brought a “Blue Watch” health warning Wednesday for the U.S. military in the Camp Humphreys ...