The Grading System
Why does the American school system grade with A, B, C, D, and F, but not E? Why did they skip that letter? Why not just grade with numerical percentages in the first place?
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American Traditions That Confuse The Rest of the World
The More You Know
- A single lightning bolt has enough energy to toast 100,000 slices of bread.
- A blue whale's tongue weighs as much as an elephant.
- The wolf's jaw can exert 1500 pounds of pressure per square inch, twice the jaw pressure of a German Shepherd. Wolves can crush large bones in just a few bites.
- Dueling is legal in Paraguay, as long as both parties have been registered as blood donors.