Populations of Ireland and Europe, showing a steep decline in Ireland in the years surrounding the Potato Famine
![Wheat yields in developing countries from 1950 to 2004, showing the dramatic impact of the Green Revolution Wheat yields in developing countries from 1950 to 2004, showing the dramatic impact of the Green Revolution](/sites/default/files/styles/large/public/4-4-map1514_0.png?itok=weDJV83d)
Wheat yields in developing countries from 1950 to 2004, showing the dramatic impact of the Green Revolution
Source: Food and Agriculture Organization of the United Nations
![Worldwide maize production in 2000 Worldwide maize production in 2000](/sites/default/files/styles/large/public/4-4-img1527_0.png?itok=YqB8SIkP)
Worldwide maize production in 2000
Source: Compiled by the University of Minnesota Institute on the Environment with data from: Monfreda, C., N. Ramankutty, and J.A. Foley.
![Worldwide wheat production in 2000 Worldwide wheat production in 2000](/sites/default/files/styles/large/public/4-4-img1528_0.png?itok=pzQopoh0)
Worldwide wheat production in 2000
Source: Compiled by the University of Minnesota Institute on the Environment with data from: Monfreda, C., N. Ramankutty, and J.A. Foley.
![Food types in the world average diet, 1988-1990 Food types in the world average diet, 1988-1990](/sites/default/files/styles/large/public/4-4-img1534_0.jpg?itok=G_o3v4At)
Food types in the world average diet, 1988-1990
Source: Food and Agriculture Organization of the United Nations
![Per capita food production worldwide, 1961-2005 Per capita food production worldwide, 1961-2005](/sites/default/files/styles/large/public/4-4-map1540_0.png?itok=J1mdoZsl)
Per capita food production worldwide, 1961-2005
Source: Food and Agriculture Organization of the United Nations