The rains came late this year in Kenya. I was there for several months in the winter and spring to conduct research for a post-doctoral fellowship, examining the consequences of increases in fertilizer use on soil fertility, maize yields, nitrogen gas emissions and nitrogen leaching losses.
Soil is the source of all life. Yet “we know more about soils of Mars than about soils of Africa,” says Pedro Sanchez, director of the Earth Institute’s Tropical Agriculture and the Rural Environment Program. To remedy this situation, the Earth Institute is taking part in an ambitious undertaking to map the world’s soils.
Agrium Incorporated and The Mosaic Company have partnered with the Earth Institute’s Tropical Agriculture and Rural Environment Program (TropAg) to improve soil measurement and fertility throughout Sub-Saharan Africa. The program will link the Millennium Villages Project to the African Soil and Information Systems Project (AfSIS) with the aim of assessing nutrient depletion in soil and [...]
Ninety percent of all existing biomass power plants use wood residue and there are currently 115 power plants in development that will burn biomass to generate electricity. But just how renewable is biomass energy?
State of the Planet is a forum for discussion on varying viewpoints. The opinions expressed by the authors and those providing comments are theirs alone, and do not necessarily reflect the opinions of the Earth Institute or Columbia University.
