The ecological footprint of a human activity can be measured in global hectares (gha). Cotton's ecological footprint to produce one ton of product ranges from 2.17 gha for organic cotton to 3.57 gha for conventional cotton (see [this analysis][1]).  How significant is that, relative to our total global ecological footprint?


  [1]: http://www.sei-international.org/mediamanager/documents/Publications/SEI-Report-EcologicalFootprintAndWaterAnalysisOfCottonHempAndPolyester-2005.pdf