Dark skies ordinance to dim Pittsburgh's light pollution

For decades, the stars in our night sky have been blotted out by artificial light—from streetlamps, residential houses, businesses, construction sites, vehicles, billboards and so on. The glow they emit misdirects light ...

Physicists mix classical light with half a photon on a qubit

A Russian-U.K. research team has proposed a theoretical description for the new effect of quantum wave mixing involving classical and nonclassical states of microwave radiation. This effect, which previously lacked a rigorous ...

LED streetlights contribute to insect population declines: study

Streetlights—particularly those that use white light-emitting diodes (LEDs)—not only disrupt insect behavior but are also a culprit behind their declining numbers, a new study carried out in southern England showed Wednesday.

Artificial light harming clownfish

Young clownfish living closest to shore are dying faster than those further offshore because they are being exposed to artificial lighting, says an international research team.

The natural brightness of the night sky

A recent study analyzes data collected at 44 of the darkest places in the world, including the Canary Island Observatories, to develop the first complete reference method to measure the natural brightness of the night sky ...

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