Gemstones like precious opal are beautiful to look at and deceivingly complex. As you look at such gems from different angles, you'll see a variety of tints glisten, causing you to question what color ...

Metamaterials are engineered structures designed to interact with electromagnetic radiation in a desired fashion. They usually comprise an array of structures smaller than the wavelength of interest.

WASHINGTON, DC—On Wednesday at the American Chemical Society Fall 2025 meeting, students and seasoned drug hunters alike gathered in a spacious third-floor ballroom of the Walter E. Washington ...