Mysteries

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What Is Jet Lag?

jet-lag

February 27th, 2014

Jet lag results from disruptions to the body's "clock" or natural, circadian rhythms. This internal clock — which runs on an average 24.1-hour schedule — controls sleep, wakefulness and a host of other physiological processes.

How Do You Get Herpes?

herpes cold sore

February 25th, 2014

A herpes infection is caused by the herpes simplex virus (HSV), which comes in two forms: HSV-1, which usually results in oral herpes infections affecting the mouth and lips; and HSV-2, which usually causes genital herpes affecting the genitals and anus.

Why Do My Nipples Hurt?

nipples-hurt

February 24th, 2014

There's a reason nipples are considered one of the most erogenous zones of the human body. These sensitive body parts are easily stimulated and easily irritated, and there are many reasons why a person might feel nipple pain.

What Is Flex Fuel?

A study shows that most people would balk at $5.30-per-gallon gas.

February 26th, 2014

A flex-fuel vehicle (FFV) is a vehicle with an internal combustion engine capable of operating on a mixture of fuels, typically gasoline and ethanol.

What Is Gelato?

gelato

February 24th, 2014

If you think gelato is just the Italian equivalent of ice cream, think again. The frozen treat contains less fat, less air and is served at a higher temperature than conventional ice cream, lending it a more intense, concentrated flavor.

Is Coffee Bad For You?

coffee, cup of coffee, coffee mug

February 20th, 2014

Coffee has both positive and negative effects on the body and mind, but the benefits appear to outweigh the harms for most people.

Why Do Freezing Pipes Burst?

freezing-pipes

February 14th, 2014

Bursting water pipes are a major concern when winter temperatures drop below freezing. But why do freezing pipes burst?

What Is Diverticulitis?

Gut bacteria in a section of colon

February 25th, 2014

Diverticulitis, a condition that can cause severe and sudden pain in the abdomen, affects the digestive system.

What Is a Vegan?

Sprouts in a salad

February 24th, 2014

The primary motivation behind veganism is to reduce harm to all living creatures. It is "compassion in action," according to the American Vegan Society.

What Is an Amber Alert?

abused child, lonely child, sad child, kid all alone,

February 18th, 2014

The AMBER alert system — an early warning system that helps police locate abducted children — was developed in 1996 as a collaboration between Dallas-area broadcasters and local police.