The growing capacity of large national agricultural systems in Brazil, China, India and South Africa, for instance, has generated South-South cooperation aimed at benefiting countries with limited resources, by allowing them to adopt or adapt the technologies of the countries with large agriculture systems, which are typically less capital-intensive and have less intellectual property rights protection. Many of the current agricultural practices have relied on cheap energy and abundant water and land, and are a leading source of greenhouse gas emissions. These practices are now proving unsustainable for the environment and health.