New research suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for photosynthesis.

Study finds that birds-of-paradise are biofluorescent, suggesting that this "hidden" phenomenon provides enhanced signaling for hierarchy and courtship.

A UK start-up is producing dyes made by bacteria and yeast rather than fossil fuel-derived chemicals, which could help ...

Hydrangeas demonstrate the importance of phenomics and the powerful influence that the environment has on organisms. The flowers are blue when grown in soil that is acidic but pink when they are grown ...

Researchers from Murdoch University and The University of Western Australia found the forewings of the fruit-sucking moth ...

A study from Nagoya University found that luteolin, an antioxidant in vegetables, helps prevent hair graying by preserving ...

Introduction: The color of Clausena lansium L. Skeels cv. Jixin fruit peel is brown (BP), while the mutant cv. Zijin had purple fruit peels (PP). The coloration of the peels was attributed to ...

1 Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran 2 Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, ...

Archaeologists excavating near the Colosseum found a rare chunk of Egyptian blue pigment dating back about 2,000 years. Photo from Simona Murrone and the Colosseum Archaeological Park Across the ...

An infant’s poop typically changes color and consistency during the first few days, weeks, and months of life. A wide range of colors is usual. In infants, the main reasons for changes in stool ...