Submitted URL: : apod.nasa.gov/apod/ap111108.html Explanation: What’s happening above those clouds? In the past few years, videos have appeared on the web detailing an unusual but little known phenomenon: rapid light changes over clouds. Upon inspection and contemplation, a leading hypothesis for its cause has now emerged. In sum, this hypothesis holds that a lightning discharge […]
Submitted URL: : photography.nationalgeographic.com/photo-of-the-day/ivanhoe-reservoir-los-angeles-ludwig/ In 2007, high levels of bromate—a carcinogen formed when bromide and chlorine react with sunlight—were found in Los Angeles’s Ivanhoe Reservoir. Today three million black plastic balls help deflect UV rays.