This is a wide-ranging and persuasive book written by an undisputed expert. Beginning with a
broad history of the Universe  Earth  Life  and Man  it considers the origins and rise of
science and technology  before moving on to discuss the present state of the world and its our
possible futures. Humans on Earth then addresses the main challenges for social and economic
development in the 21st century in the context of global change. It presents a detailed but
non-technical analysis of questions relating to climate change  our dependence on fossil fuels
deforestation  loss of biodiversity  desertification  and air  water  soil  and ocean pollution
as well as problems related to overpopulation  poverty  social and economic inequalities  and
conflict potential. The three main  but largely mutually exclusive  discourses on human
development and the environment are described and discussed. The main emphasis is on the risks
and uncertainties of the short-term future - the next 50 to 100 years - with regard to
environmental degradation and the sustainability of our growth paradigm. ... a sweeping 
thoughtful view of the role of humans in shaping our modern world. Paul Epstein  Center for
Health and the Global Environment  Harvard Medical School