Almost everything that distinguishes the modern world from earlier centuries is attibutable to science, which achieved its most spectacular triumphs in the seventeenth century.
- Bertrand Russell
Earths tilt
arctic circleWhy do we have seasons
antarctic circle
tropics of cancer, capricorn
Winter and Sumemr SolsticesCoriolis Effect
Fall and Spring Equinoxes
clockwise deflection in northern hemispere
counterclockwise deflection in the southern hemisphere