April 21, 2021

Season For upon |Seasons are largely due to factors surrounding the Earth's tilted axis as it revolves around the sun. A season is a period of the year that is distinguished by special climate conditions. The four seasons—spring, summer,…

Glacier A glacier is a huge mass of ice that moves slowly over land Lago Argentino For upon |The Perito Moreno Glacier dominates this view of Los Glaciares National Park, Argentina. The Perito Moreno Glacier develops high in the…

The Peloponnesian War For upon |The Peloponnesian War, one of the most significant events in ancient Greek history, enveloped the city-states of the ancient Greek world, forever changing the region. This copper engraving by Matthaus …

Equator World Map The Equator: For upon |Encyclopedic entry. The Equator is an imaginary line around the middle of the Earth. It is halfway between the North and South Poles and divides the Earth into the Northern and Southern Hemispheres.…