soil

"The Origins of the Russian Chernozem Soil (Black Earth): Franz Joseph Ruprecht’s 'Geo-Botanical Researches into the Chernozem' of 1866"

This article analyses the contribution of the Austrian-born Russian scientist, Franz Joseph Ruprecht (1814–70) to the development of geobotany in general and to the controversial issue of the origins of the very fertile chernozem (Black Earth) of the steppe region of the Russian Empire.

"Toiling in Paradise: Knowledge Acquisition in the Context of Colonial Agriculture in Brazil's Atlantic Forest"

Four centuries of colonial extraction lead to severe ecological degradation of the forests and soils of the Atlantic region of Brazil. This article discusses the management of soil fertility and the relationship between agricultural practices and forest stands based on agricultural manuals published in Brazil over a period of more than two centuries.

Centralia Mine Fire

The Centralia mine fire in Centralia, Pennsylvania is a massive underground fire that has been burning for more than 50 years. Beginning in 1962, it has since driven away all but ten (as of 2012) residents.

Cahokia: America’s Ancient Metropolis

The ancient Native American city of Cahokia supported an estimated 20,000 residents at its height and featured scores of earthen mounds. However, by 1400 it was abandoned.