In the year 2006, an independent team of experts from Nigeria, the UK, and the United States convened by the Nigerian Conservation Foundation concluded that the Niger Delta is one of the world’s most severely petroleum-impacted ecosystems. The need for such an assessment resulted due to the...

The main aim of this paper is to observe the environmental behaviour in some cities of the word, by analyzing for each city the trends of several energy and emissions indicators that appear as explanatory variables in both energy and labour average productivity equations. At the same time we...