When the Sun is near the horizon, its light passes through a lot more of the atmosphere to reach the Earth's surface than ...

Among the brilliant colors, researchers were most excited to find a ... Ancient rome Archaeology Blue Rome Get the best tech, science, and culture news in your inbox daily.

This time was different. When he turned on the stirring apparatus, a bright blue flash bloomed out of the tank. Roderick Day, a technician working in the next room, saw the flash, felt a slight ...