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.

Non-photochemical quenching is a protective mechanism that plants employ to dissipate excess light energy. Plants often absorb more light energy than they can process in photosynthesis ...

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 ...