The new combined edition looks at the relevance of content and clear communication. Current information from the fields concerned has been incorporated and a learner-centred approach is used. Themes of world relevance have been used to divide the chapters into sections. Subjects such as natural and human resources and their exploitation, energy and mass communication, developments in the fields of computers and technology such as BPOs, artificial intelligence, rainwater harvesting, solar and wind energy, nuclear power, e-learning, Internet culture, etc. have been used in this new edition. Wherever necessary, fresh exercises have been added; so also elements such as email, phrasal verbs, modals etc. have been worked into the units. Altogether the book is fresh and new because of these changes and has a new large format with generously laid out photographs and pictures.