Blue flecks of lapis lazuli in the tartar of a 10th-century nun. She likely was an accomplished painter and manuscript illuminator, who used her (unbrushed) teeth to shape her paintbrush.

Using blue shop towels in homemade face masks can filter particles two to three times better than cotton, according to Lindsay Medoff, the CEO of Suay Sew Shop.

This GIF tells the story of Red America vs Blue America. December 31, 2013. By Chris Cillizza. Reading Dan Balz's terrific piece over the weekend about the reddening (and blue-ing) ...

Scientists found tiny blue paint flecks had accumulated on the teeth of a medieval German nun. The particles of the rare lapis lazuli pigment likely collected as she touched the end of her brush ...

The sky on Earth is blue because of a phenomenon known as 'Rayleigh scattering', in which blue particles of light are scattered around by the atmosphere. On Mars, the reverse effect takes place.

A forensic scientist testified in Alex Murdaugh’s murder trial Tuesday she found gunshot primer residue particles on clothes the now-disbarred South Carolina attorney was wearing the night his ...

Schenk used iridescent particles to reproduce the starting blue of the Morpho butterfly wing in a series of paintings that change color when lit or viewed from different angles.

Tiny particles of lapis lazuli pigment found in the dental plaque of a medieval women indicate that she was involved in the creation of medieval religious manuscripts ...

THIS terrifying animation shows how coronavirus particles from a single cough can hang in the air “several minutes” and spread across two aisles of a supermarket. Scientists created a … ...

The Invisible Blue-Jean Particles in the Original Star-Spangled Banner. The American flag at the Smithsonian has collected blue cotton fibers over the years, but not as many as popular legend says.

Rare paint particles found in the teeth of a medieval nun indicate that she was an unknown illustrator of sacred texts.