The thing about the blood that everyone notices first: It's blue, baby blue. The marvelous thing about horseshoe crab blood, though, isn't the color. It's a chemical found only in the amoebocytes of ...

The modern-day practice has earned a fair amount of press lately for both its sheer strangeness and environmental impact. As The Atlantic reported last month, a quart of horseshoe crab blood can sell ...

Farmers' clubs were very popular in the late 1860s. The club meeting gave farmers an opportunity to discuss farming problems, husbandry, fertilizers, the newest farm implements, most profitable crops ...