Soil Fertility
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What Does It Mean for Soil To Be Healthy?
Yushu Xia’s research bridges field-based science and advanced modeling to inform more resilient land management strategies that benefit farmers, ranchers, communities and the planet.
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Revitalizing Africa’s Soils
To feed our burgeoning global population, the world has to at least double crop yields by 2050, by improving seeds of high yielding crops and cultivating healthy fertile soils. A new on-the-spot soil testing kit will help meet this challenge.
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Investigating Impacts of Increased Fertilizer Use in Africa
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.
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Why Soil Matters
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.
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Getting to the Root of Africa’s Agriculture Challenges: TropAg and AfSIS Partner to Improve Soil Fertility
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…
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Is Biomass Really Renewable?
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?
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
