The common assumption is blue light is bad news for sleep — and with right reason. A 2022 systematic review by Swiss ...

emit a faint visible light that vanishes upon death. This barely-there glow, known as ultraweak photon emission (UPE), is produced by chemical reactions inside cells. While these biophotons are ...

Breakthrough ultrathin metalenses not only focus light like traditional lenses but also turn invisible light into visible ...

Streaks of colorful light could paint the sky over a large portion of the country on Sunday night into Monday morning amid a ...

Montana, North Dakota and Minnesota are just some of the states that may be able to see the Northern Lights Monday night.

Even high-performance smart phone cameras still require a stack of lenses that often account for the thickest part of the ...