Food is essential to our livelihoods, but the proportion of people working in food production has declined over time. As countries develop, technology improvements and increasing yields typically lead to fewer people working in agriculture.

Mexico City blanketed by smoke. Photo by Santiago Arau

About 100 fires have broken out in central and southern Mexico since last week, causing dangerous conditions for nearby residents. Most of the fires broke out along the west coast, although smoke from the fires have caused hazardous air conditions in many parts of country. Mexico City, home to about 21 million people, declared an environmental emergency on Tuesday and warned residents to stay indoors to avoid the smoke-filled air.