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Need ideas for a girl's night out? Check out these five dates ideas for you and your girlfriends to start planning.

There are eight phases in the lunar cycle and the moon is in one of them every night. What are these phases of the moon?

Every night on the news, the weatherperson reports the UV index. What is the UV index and how is it calculated?

What do raccoons eat when they’re rummaging around at night like masked bandits?

The autumnal equinox is the day Earth is perfectly angled to the sun, so the day and night are of equal length. Well, almost.

Shabbat is the holiday that is central to Jewish life, occurring every Friday at sunset to Saturday night. But what is it and how is it observed?

You hear your cat meowing in the middle of the night and wonder, can cats cry like humans do?

Some college majors demand late nights, complex equations and lab reports that never end. Others? Not so much.

Pulled an all-nighter last night? You're a danger to yourself and others. Find out why sleep deprivation is such a hazard.

Sleep apnea causes patients to actually stop breathing periodically throughout the night. Learn about the silent dangers of sleep apnea.

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