I’m hard at work on a paper that concerns the Biosphere, a term originally introduced by an Austrain geologist, Eduard Suess during the late 19th century. Suess used the term apparently to represent everything in Nature that was organic (from a chemical standpoint). The biosphere was also a very important concept for the eminent Russian scientist, Vladimir I. Vernadsky during the early 20th century.
I still find the term very useful from a scientific standpoint, although it’s use has somewhat declined here in the early years of the 21st century. From my standpoint, the biosphere is a complex adaptive system, and a very important one at that, since we are at the moment (until human space travel becomes a bit more advanced) utterly dependent upon it for our existence.