Science and U: Light is a Vibrating Medium

Dr. Weiping Yu is back with another exciting segment of Science and U. The physicist comments on a clinical trial where Hydroxychloroquine and Azithromycin are proven helpful in the recovery of COVID-19 patients. Dr. Yu also comments on the latest discovery by scientists that outer space isn’t pitch-black. How is light formed and does it conform to the conventional explanations? Can magnetic fields be remotely generated and can they be used to treat illnesses? What exactly is dark energy?