Douglas firs weren't great for lumber, but they once made the small town of Eureka the Christmas-tree capital of America.
The coronavirus pandemic left farmers falling back on students to pick crops. But it certainly wasn’t the first time.
In the 1920s, some people thought that the new invention of radio would make American farmers less "backward."
Cultivating a limited number of crops reduced the genetic diversity of plants, endangering harvests. Seed collectors hope to fix it by finding the plants’ wild cousins.