Deep in the country's interior, the global gold and diamond trade begins with back-breaking labor, environmental destruction, and uncertain profits.

With a new train line threatening its habitat, the big cat may be the key to protecting this Mexican reserve—and everything else in it.

In Simojovel's network of dark tunnels, workers risk their lives to find coveted treasures that preserve a distant past.

Giulio Geraldi brought cultivation of the sweet stuff back from the verge of extinction.