Metamaterial Offers Simpler Route to Slow Light Excerpt: Light is generally accepted to travel at a constant speed, but its group velocity can be slowed by passing through refractive materials. Compared to its top speed in a vacuum, light travels slightly slower in air and slightly slower still in water. These changes in speed are fairly insignificant, however. My comment: I doubt that any member of the RNA society thinks that the changes that link the de novo creation of…