National Zoo July 22, 2022 12:11 pm National Zoo Keeps Panda Mei Xiang Cool on Her Birthday The panda got to celebrate with an ice cake, and visitors were staying cool with misting devices. News4’s Megan McGrath reports. Local 2:07 Why does the sky look bluer in the fall? 1:37 Memorial held for DC woman year after disappearance 25:47 Israel attacks Iran: The News4 Rundown 1:49 George Washington's Mount Vernon undergoing renovations to preserve mansion 3:18 DC-based run club to cheer runners at Marine Corps Marathon