The purpose of this lesson is for students to learn how the Earth's systems interact on a global level. They will examine global environmental data and compare this to data on the polar regions. In the process, they will develop an...

Have you wondered what the Earth's climate was like millions of years ago? Click on a period to view a map and explanation of ancient Earth's climate.

Why do some regions experience full-time heat while others are reckoning with frigid temperatures and snow? And why are the seasons reversed in the two hemispheres? Rebecca Kaplan explains how the shape of the Earth's orbit around the...

A map from 1910 of the Indian subcontinent and the Central Asia region showing the typical rainfall distribution patterns during the summer monsoons, keyed to show areas of rainfall ranging from very light to, according to this text, the...

A map from 1910 of the Indian subcontinent and the Central Asia region showing the typical rainfall distribution patterns during the winter monsoons, keyed to show areas of rainfall ranging from very light to heavy rainfall. The map...