" Mathematics is the common language of science and engineering, and Calculus is a part of mathematics that is essential for understanding many aspects of the physical world."

http://www-math.mit.edu/undergraduate/calculus.html

Useful Links:

1. Why Should I Study Calculus?  http://mathforum.org/library/drmath/view/52362.html

2. Why Do We Study Calculus?  http://www.math.vanderbilt.edu/~schectex/courses/whystudy.html

3. LEARNING CALCULUS http://www.math.unl.edu/~smh/calc/

4   Top 10 Reasons for Studying Calculus http://www.nku.edu/~longa/classes/mat120/10reasons.html

6. Career possibilities that exist in mathematics and related fields: