The green synthesis of ZnO nanoparticles using Padina pavonica extract shows promise for environmental remediation, ...

The feathers of many birds are blue, not because they produce a pigment, but because the microscopic structure of their feathers is able to filter light. This physical phenomenon is interesting ...

The dye has a structure similar to the known blocker, Nedergaard says. And the dye is very closely related to FD&C Blue No.1, which is considered very safe, with no toxicity in doses up to 12 ...

Methylene blue is both a dye and an FDA-approved medication.Described as the first fully synthetic drug used in medicine, methylene blue was initially synthesized by a German chemist in 1876, and ...

Once the only blue dye in Europe, woad pigment made a fortune for the sun-rich Toulouse area during the Renaissance, when it also was called Toulouse’s Blue Gold.