Mexican farmers using fireflies to save forest

NANACAMILPA, Mexico (AP) — In the village of Nanacamilpa, tiny fireflies are helping save the towering pine and fir trees on the outskirts of the megalopolis of Mexico City.
Thousands of them light up a magical spectacle at dusk in the old-growth forests on reserves like the Piedra Canteada park, about 45 miles (75 kilometers) east of Mexico’s sprawling capital city.
Piedra Canteada in Tlaxcala state isn’t a government-run park, but a rural cooperative that has managed to emerg