Stories by Raymond Siever

Presenting an issue on the earth as a system ofinteracting fluids, including living matter. Some of the Rows are fast; others slow, but overall the planet is maintained in a remarkably steady state

The outstanding feature of our own planet is the dynamic activity of its atmosphere and its crust. Both have been substantially altered by the evolution of living organisms

The main divisions of the earth's surface are linked by vast geochemical cycles to form a stable worldwide system in which the inputs and outputs of the key constituents are in balance