Physical Geography

Richat Structure: A Geologic Wonder

October 10, 2019May 6, 2014 by Caitlin Dempsey

The Richat Structure, a geologic wonder viewable from space, is a striking circular feature found in the Sahara Desert in Mauritania. Also known as the … Read more

How Deforestation Affects Physical Geography

August 11, 2020April 27, 2014 by Elizabeth Borneman

Deforestation is a problem we are likely all familiar with, even in passing. We drive or walk by small or large tracts of land with … Read more

Satellite image showing the changing river patterns of the Amazon River. Image: NASA, public domain.

How Rivers Change the Landscape

October 15, 2021April 24, 2014 by Elizabeth Borneman

Rivers twist and turn, shaping the environment around them just as the physical geography of the surrounding landscape shapes them.

Photograph of the eruption from the summit of Eyjafjallajökull from the north looking to the south across the Gígjökull outlet glacier, its "missing" proglacial (ice-margin) lake caused by the jökulhlaup that filled in the lake. Photo: Oddur Sigurðsson, Iceland Meteorological Office. Public domain.

Volcanoes and Glaciers in Iceland

February 18, 2021April 2, 2014 by Elizabeth Borneman

Iceland is a country of varied geography, topography, and landscape.

Aquatic Dead Zones

October 10, 2019February 26, 2014 by Caitlin Dempsey

Aquatic dead zones are bodies of water where the oxygen conditions are so low that marine life is unable to be supported.