Change: http://www.fao.org/docrep/X5328e/x5328e00.htm#ContentsIntroductionChapter 1 - Logistics of charcoal production 1.1. Developing a fuelwood and charcoal energy policy 1.2. The energy balance concept 1.3. Calculating an energy balance 1.4. Unit processes of charcoal production 1.4.1. What is charcoal? 1.4.2. Unit processes of charcoal-making Chapter 2 - Growing the wood raw material   View changes from previous version. (Word count: 1573)

Change:  Although methane has a much shorter half-time in the atmosphere than the carbon dioxide (12 years vs. hundreds of years), there are no reasons to   View changes from previous version. (Word count: 619)