In a nutshell Ancient Egyptian artisans developed precise, repeatable recipes to create four distinct shades of Egyptian blue ...

The bright blue, glowing waves are back off Southern California’s coastline, lighting up dark beaches for the past week to the delight of beachgoers who scout out the unusual sight. The ...

Beachgoers spotted bright blue, glowing waves in Southern California’s coastline this week. The bioluminescence waves, which turn the ocean red during the day and glow neon blue night ...

A large, bright blue spiral spotted over Europe on Monday night sparked chatter on social media about what might have caused the mysterious vortex. Videos posted on X showed a blue orb in the ...