Sahara dust colors the evening sky, glittering crystals shimmer in detail – This week, our gallery photographers once again show diversity.

From brilliant blues to fiery reds, discover how nature crafts diamonds in every color, and why some shades are rarer than ...

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Fire rainbows, a phenomenon that captivates both the eye and the imagination, are a rare sight in the sky. When these ...

Photonic crystals are periodic optical structures that can control the flow of light. Multiple reflections from surfaces separated by a distance similar to the wavelength prevent an optical beam ...

As the world contemplates the fifth anniversary of the COVID-19 pandemic, I am reminded that we’re not the only generation to ...

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