□ □
[□] □
(□ | □) □
And so it is not only desirable , but pertinent , that Africans should create a sustainable environment for their current and future needs . This three-volume set is the second edition of Burns in Pickering 's Aldine Edition of British Poets . The creation of a sustainable development strategy requires insight both into the present and into the future . Ironically a possible factor in the failure of the expedition was the indiscretion of Giuseppe Mazzini , compiler of this account , who , believing that there was no postal censorship in Britain , mailed details of the plot to another Italian revolutionary in London . Bassi , among the most attractive of the nineteenth-century Italian patriots , is described by the eleventh edition of the Encyclopaedia Britannica as " a gentle , unselfish soul , who , although unusually gifted , had an almost childlike nature . Much of the challenge relates to the creation and maintenance of a sustainable environment whilst , at the same time , recognizing the need to develop the economic and social resources of nations . This chapter provides a synthesis of the issues covered in the previous chapters of AEO , followed by an analysis of policy responses for the implementation of a sustainable environment and development agenda for Africa . There are both direct and indirect economic implications of human vulnerability to environmental change which involve costs .