Why Fertilizer Runoff Causes Dead Zones
Fertilizer runoff carries excess nitrogen and phosphorus into waterways, fueling massive algal blooms. When these algae die and decompose, the process consumes oxygen, creating…
Topic archive
Food, Water & Land Sustainability
Guides on integrated approaches to managing food, water, and land resources sustainably
Conventional vs Organic Agriculture: Environmental Trade-Offs
The environmental trade-offs between conventional and organic agriculture involve balancing factors such as land use, chemical inputs, biodiversity, and greenhouse gas emissions. Organic farming…
Food Systems and Planetary Boundaries
Learn how food systems affect climate, biodiversity, freshwater, land, nutrients, and the planetary boundaries—and how sustainable food systems can nourish people and the planet.
Which Foods Have the Largest Environmental Footprint?
Animal-based foods, particularly beef and lamb, have the largest environmental footprints in terms of greenhouse gas emissions, land use, and water consumption. Plant-based foods…
Phosphorus Pollution Explained: Causes, Impacts, and Solutions
Phosphorus pollution is the excessive input of phosphorus into water bodies, primarily from agricultural runoff, wastewater, and industrial discharges. It triggers eutrophication, leading to…
What Is Green Water and Blue Water? A Comprehensive Guide
Green water is precipitation stored in soil and used by plants, while blue water is liquid water in rivers, lakes, and aquifers. These concepts,…
How Food Waste Affects Climate and Land Use
Food waste is the discarding of edible food throughout the supply chain and by consumers. When food is wasted, all the resources used to…
How Agriculture Changes the Global Water Cycle
Agriculture profoundly alters the global water cycle by withdrawing massive amounts of freshwater for irrigation, modifying land surfaces, and releasing pollutants. These changes affect…
Land Sparing vs Land Sharing: Balancing Food Production and Biodiversity
Land sparing and land sharing are two contrasting strategies for balancing agricultural production with biodiversity conservation. Land sparing involves intensifying farming on existing land…