Citrus groves once spread across metro Phoenix, producing grapefruit, lemons, oranges and tangerines. Growth pushed the largest citrus groves out of Phoenix, leaving only niche operations that ...

And now new numbers show just how detrimental it really is; the state's citrus production is down nearly 90%. To put this into perspective, Florida produced 244 million boxes of oranges and 50 ...

A version of this story appears in the February 2017 issue of National Geographic magazine. Citrus, in many ways, stands alone. So many cultivated species have come from so few primary ancestors.

The crackdown on undocumented workers in Central California snared dozens of citrus workers, striking fear into many who are afraid of getting caught and being deported. But did the raids cause ...