Night

Night (also described as nighttime, unconventionally spelled as "nite") is the period of ambient darkness from sunset to sunrise during each 24-hour day, when the Sun is below the horizon.

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An Early Sign of Dementia Risk May Be Keeping You Up at Night, Says Study

Hurricane Rafael Ravages Cuba: A Night of Power Outages and Chaos

Exposure to light at night linked to increased risk of death, other health issues: study

Sleep Experts Warn: Exposure to Night Light Increases Death Risk by 34%

Between night and day: The power of flies to adapt - EurekAlert

New Research Shows Blue Light at Night Makes Fish Anxious – Could Humans Be Affected Too?

An International Space Station Leak Is Getting Worse—and Keeping NASA Up at Night

Jet contrails may cool the planet by day and warm it by night

Pregnant women who sleep less than 7 hours a night may have children with developmental delays

Men have a daily hormone cycle — and it's synced to their brains shrinking from morning to night

Light pollution at night may increase risk of Alzheimer’s, study finds

Exposure to light pollution at night may increase Alzheimer's risk, especially in younger people

Life on alien planets probably wouldn't experience day and night – here's how that may change evolution

Snoring at Night? You Might Be at Risk for Uncontrolled Hypertension

This Company Wants to Sell You Sunlight at Night From Space

The Mosquito-Borne Virus Keeping People Indoors at Night

Eclipse Soundscapes AudioMoth Donations Will Study Nature at Night

New Research Reveals That Your Brain’s Memory “Resets” Every Night

Improve Your Sleep With 3-Minute “Activity Breaks” at Night

Eternal Day and Night: Webb’s Journey To Understand a Distant World’s Bizarre Atmosphere