Why Do We Get Sunburned?
Why Do We Get Sunburned? Sunburn is the result of over-exposure to sunlight, which causes heat and light damage to the skin. Ultraviolet rays from the sun penetrate the...
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How Did the Days of the Week Get Their Names?
Weekdays were named in honor of the sun and moon, and for the ancient gods. The Romans named the first two days of the week after the sun and moon, and so they are...
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Why Do We Sweat?
Sweating plays an important role in the body. It is one of the ways the body is able to cool off when we become too warm. When we exercise, our muscles produce extra...
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What Causes Freckles?
What Causes Freckles? Freckles are caused by the brown skin pigment called melanin. All of us have some melanin in our skin. Usually, this brown pigment is evenly...
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What Is a Comet?
A comet is a huge ball of ice and space rock that orbits the sun deep in space. Occasionally, one passes near the earth and the sun. As it approaches the sun, heat...
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