Ted Benton, a Professor of Sociology at the University of Essex, writes about how Marx's theories can be applied to modern environmental issues such as climate change. He talks about how Marx's ideas about capitalism relate to current exploitation of nature, and specifically about soil degradation which was an issue during the 1860s when Marx was alive. He also includes problematic parts of Marx's attitudes towards nature, such as his praise of increased productivity of land that may have inspired Stalin.