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.

When I first moved to Marco Island in 1980 it was common for homes to have citrus trees in the yard. The downward spiral of ...

All present-day citrus trees arose from a common ancestor 15 million years ago ... They found that the citrus family could be divided into three groups that first emerged between 6.3 million and 7.5 ...

Researchers have been working for eight years on a genetically modified tree that can kill the tiny insects responsible for citrus greening. The process involves inserting a gene into a citrus ...

People go out and eat and, all of a sudden, they want a finger lime tree.” READ: Carrying On A Family Tradition: UF/IFAS CALS Grad Inspires The Next Generation Of Citrus Growers None of this ...