Nov. 7—Pecans are not only good for humans, they are delicious, and Oklahoma's wholesale pecan industry generates $23 million a year. Daryl Johnson, who owns Johnson Nutty Acres, harvests pecans from ...

The pecan (Carya illinoinensis) is a species of hickory native to the southern United States and northern Mexico in the region of the Mississippi River. The tree is cultivated for its seed in the ...

This story appears in the September 2016 issue of National Geographic magazine. In 1915 Paul Popenoe gave 26 photos of giant trees to National Geographic. One of them was this shot mailed from San ...