September 22, 2022 6:52 pm What Are Heat Islands? Dagmar Midcap Explains In tonight’s Down to Earth, the phenomenon known as “Heat Islands.” NBC 7’s Dagmar Midcap explains. US & World Videos 2:18 San Diego celebrates May 2024 as Small Business Month 3:30 Hundreds of flood victims to sue City of San Diego for negligence 0:49 2024 NHL Draft lottery results 2:58 Remembering San Diego philanthropist Joan Jacobs 2:18 Disbarred San Diego lawyer accused of stealing from nonprofit pleads not guilty to charges