The food system today is destroying the environment upon which future food production
depends. It contributes to some 20-30% of anthropogenic greenhouse gas (GHG)
emissions, is the leading cause of deforestation, land use change and biodiversity loss;
accounts for 70% of all human water use and is a major source of water pollution. Moving
from land to sea, unsustainable fishing practices deplete stocks of species we consume and
also cause wider disruption to the marine environment. At the same time, the impacts of
climatic and environmental change are starting to make food production more difficult and
unpredictable in many regions of the world.