What is a central idea in the article "Famine: Past, Present, and Future"? A famine is declared when 30 percent of the population suffers from malnourishment.

The organization Action Against Hunger (AAH) provides aid to areas suffering from famine.

The failure of Ireland's potato crop in the 1840s created the Irish Potato Famine.

Food insecurity, which is a lack of dependable food sources, leads to famine.