Ben Nowack and Tons of Mirrors is solving solar energy's nighttime problem.
The ultra-white paint reflects 98.1 percent of sunlight, cooling building surfaces 'like refrigeration' to fight climate change.
The U.S. military deployed a solar-harvesting test module into space in May. Will space-based solar power ever work, and what will it take?
About one in five Americans will develop skin cancer during their lifetime.
Nearly half of adults are so short on rays that they're deficient in vitamin D.
They'd like it to be as easy as swallowing a pill.
According to chef Paul Greening, Britain should look East to get the nutrition we’re missing from lack of UV rays. His vitamin D-rich meal of mackerel, salmon, tuna, and cod liver is like “an hour’s worth of sunshine.”