What Is a Patent?
A patent is a grant issued by the government to protect someone’s invention from being copied and used by others. A patent gives the invento
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Why Is There Daylight-saving Time?
Daylight-saving time is the practice of advancing clocks during summer months by one hour so that in the evening daylight is experienced an
What Were the Dark Ages?
The “Dark Ages” is a term once used to describe the period between the 5th and 11th centuries in western Europe. “Dark” refers to th
Why the Years in the 2000s Are Called the 21st Century?
Why the Years in the 2000s Are Called the 21st Century? It appears that we are a century ahead of our calendar because we refer to the years