By the time the Universe was one billion years old, the cosmic fog obscuring light from the cosmic dawn had fully lifted, allowing UV light to propagate freely (Fig. 1a). Precisely where and when ...

A mysterious thick fog has swept across the US with multiple communities reporting a "burning chemical-like smell," akin to a similar event last year when 70 million people were engulfed in dense fog.

Down in Florida, residents have been haunted by a strange specter: a lingering and super-dense fog that allegedly smells like chemicals and is making people sick. As USA Today reports ...

Houston drivers on Monday morning found themselves wrapped in that mysterious grayness we know as fog, which the National Oceanic and Atmospheric Association defines as water droplets suspended ...