Researchers uncovered a second ancient method the Maya used to craft their long-lasting blue pigment, revealing new cultural ...

Maya blue is a highly unusual pigment because it is a mix of organic indigo and an inorganic clay mineral called palygorskite. The rich blue color does not fade over time; it has maintained its ...

Some red algae exhibit structural color that gives their growth tips a blue hue and the rest of their bodies, including their ...

Here’s one color surprise humans never got to see. From 3 billion years ago to roughly 600 million years ago, the Earth’s ...