Explore the surprising potential benefits of sunlight on cardiovascular health in this 13-minute TED-Ed talk by dermatologist Richard Weller. Discover how UV light can trigger the release of nitric oxide, a chemical transmitter stored in the skin, and its positive effects on blood pressure and the cardiovascular system. Learn about the connection between sun exposure and Vitamin D production, and consider the implications of this research for understanding regional health differences, such as why Scots may experience more health issues than Australians. Gain insights into the complex relationship between sunlight and human health, challenging conventional wisdom about sun exposure.