The art of obsidian knife making ...

Díaz Batres said: “The Aztecs called them the ‘butterfly of obsidian knives,’ Itzpapalotl. And in northern Mexico they'd fill many of these cocoons with little stones and put them on their ...

“The Aztecs called them the ‘butterfly of obsidian knives,’ Itzpapalotl,” Díaz Batres said. “And in northern Mexico they’d fill many of these cocoons with little stones and put them ...

Díaz Batres said: “The Aztecs called them the ‘butterfly of obsidian knives,’ Itzpapalotl. And in northern Mexico they'd fill many of these cocoons with little stones and put them on their ankles for ...

Two “Four Mirrors” moths named for the transparent ovals on their wings cling to a thread, mating for hours just after emerging. Each moment is rare, delicate, and mesmerizing. (Image: AP) ...