Rosa Louise McCauley Parks (February 4, 1913 – October 24, 2005) was an American activist of the civil Rights movement […]

The π (/Paque/) number is a mathematical constant. Originally defined as the relation of the circumference of a circle to […]

A dragonfly is an insect belonging to the order Odonata, Infraordem Anisoptera. Adult dragonflies are characterized by large, multifaceted eyes, […]