An interdisciplinary and quantitative account of human claims on the
biosphere's stores of living matter, from prehistoric hunting to modern
energy production.
The biosphere--the Earth's thin layer of life--dates from nearly four
billion years ago, when the first simple organisms appeared. Many
species have exerted enormous influence on the biosphere's character and
productivity, but none has transformed the Earth in so many ways and on
such a scale as Homo sapiens. In Harvesting the Biosphere, Vaclav
Smil offers an interdisciplinary and quantitative account of human
claims on the biosphere's stores of living matter, from prehistory to
the present day. Smil examines all harvests--from prehistoric man's
hunting of megafauna to modern crop production--and all uses of
harvested biomass, including energy, food, and raw materials. Without
harvesting of the biomass, Smil points out, there would be no story of
human evolution and advancing civilization; but at the same time, the
increasing extent and intensity of present-day biomass harvests are
changing the very foundations of civilization's well-being.
In his detailed and comprehensive account, Smil presents the best
possible quantifications of past and current global losses in order to
assess the evolution and extent of biomass harvests. Drawing on the
latest work in disciplines ranging from anthropology to environmental
science, Smil offers a valuable long-term, planet-wide perspective on
human-caused environmental change.