Review:
There have been numerous texts looking at human impact on the
Earth but most have taken a purely temporal/historical perspective
whilst others have taken an areal view. The former lists changes
through time; the latter lists changes in an area. Although
this is useful, it lacks the dimension of tracking changes through
both space and time. This is the unusual perspective adopted
here and there is much to commend.
An
introduction sets the scene by outlining the focus of the text
- to track human input from the beginning to show how it has
affected the Earth. This beginning is not the Industrial Revolution
as one normally expects but the real origin - the formation
of the Earth. The aim is partly to show how the Earth has changed
(climate really is dynamic over time) but also to highlight
human impact. This is coupled with the subsequent chapter that
describes the rise of Homo sp. It's interesting to
see this approach because it highlights that human impact has
evolved alongside human species development. Human impact is
not just something that has happened recently but has been growing
through time. From this point in time (and the text) humanity
has developed to the stage where it can expand. This depends
upon sufficient resources and so chapter three starts with the
most fundamental - food. The first point is not foraging as
one might expect (i.e. the origins of food acquisition) but
the first farming systems. We lose foraging but gain from a
perspective that encompasses Asian as well as European farming
systems. Gradually brought through time we see the way in which
modern food demand has been satisfied. Chapter four links with
this to study the way in which diet has changed and the implications
of this. Static acquisition i.e. farming and domestication improves
the efficiency of the system but also means health outcomes
are changed. together, usually, this leads to an increase in
population which needs to live somewhere. This somewhere is
increasingly in housing agglomerations i.e. urban areas. According
to the UN we are now a predominantly an urban humanity and whilst
this saves space it has an environmental cost. however, as this
story unfolds in chapter five it also has benefits with the
advent of writing and the development of urban systems around
the world. The conventional story goes that urban surplus labour
is used to create goods and so chapter six outlines the development
of raw material production and consumption through time and
space. We see that its not just Europe but also India and China
that have impacts here. Although the story stops at colonial
America it is continued in the next chapter which has the broad
scope of industrial work. This is not labour but energy - physical
work - that is the focus; the rise of inorganic sources of energy
and the loss of biological power. Goods manufactured need to
be consumed and its not surprising that chapter 8 studies the
way in which trade has developed alongside the interest in consumption
(or mass/over-consumption according to many). What links all
these chapter together is the need for energy. Chapter 9 describes
the rise of energy types and usage. A final chapter ties all
the preceding work together by suggesting that the end result
of this pathway is a warming climate that threatens us all.
This
is a very unusual text. High points are the topic perspective
and the truly global focus. The former allows the reader to
see connections that are not often apparent; the latter is a
welcome antidote to the more US/Euro-centric approach. It's
also highly practical given the imminent rise of these two nations
to see they also have an impact. In the fine print there are
some less conventional explanations but these are unlikely to
trouble the beginner. Again, a lack of data reduces the impact
but does keep the text in manageable proportions. Overall, a
very good approach that is worthy of further examination.