Where Were Numbers First Used?
The earliest written numbers we know of were used in Egypt and Mesopotamia about 5,000 years ago. At first men reckoned by chipping notches…
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When Did Writing Begin?
When Did Writing Begin? Actual writing took a long time to develop. For thousands of years, men drew pictures of their activities and sent t
What Is the Zodiac?
The Zodiac is a group of constellations that encircle the path traveled by the planets as we watch from the earth. The word “zodiac” is Gree
What Is Bipolar Disorder?
Bipolar disorder, also known as manic-depressive illness, is a brain disorder that causes unusual shifts in mood, energy, activity levels, a
How Will You Explain Dengue Fever?
Dengue fever is a mosquito-borne disease that occurs in tropical and subtropical areas of the world. Mild dengue fever causes high fever, ra