An experimental replica of shell beads with Natufian red organic colorant made from the roots of Rubiaceae plants Laurent Davin, CC-BY 4.0 The flash of bright red caught Laurent Davin’s eye. He was ...

Add Yahoo as a preferred source to see more of our stories on Google. Some parents say that red dye No. 3 in foods causes behavioral problems in their kids. (Photo illustration: Celina Pereira for ...

Tutankhamun’s sarcophagus, Van Gogh’s poppies, and Britain’s red coat uniforms share something: they all derived their red color from the roots of the rubiaceae plant. A new addition to that list are ...

Plants that secrete colored nectars are part of an exclusive club. To date, only 70 plants in the world are on that list. The colors lure in pollinators, but more recently they sparked the interest of ...