The environmental system is characterized by an interplay of geophysical and geochemical processes that provide a setting for life. Now that human interventions are affecting the global system as a whole, it is important to distinguish between changes of natural origin and changes brought about...

The possibility of encouraging the growth of forests as a means of sequestering carbon dioxide has received considerable attention because of concerns about the threat of global climate change due to the greenhouse effect. Would this approach be as inexpensive as studies have suggested? We...

Land degradation is a global problem affecting negatively the livelihoods and food security of billions of people, especially farmers and pastoralists in the developing countries. Eradicating extreme poverty without adequately addressing land degradation is highly unlikely. Given the importance...

Agriculture, forestry and other land use (AFOLU) represent 22% of global greenhouse gas emissions. To meet the objectives of the Paris Agreement, the AFOLU sector greenhouse gases must be dramatically reduced and eventually transformed to net negative CO2e within this century. The...