SAN CRISTOBAL DE LAS CASAS, Mexico (AFP) — The Agua Azul waterfalls in southern Mexico are a playground of bright turquoise water cascading over limestone steps. But after a powerful earthquake hit the country, they dried up — and the area’s once-booming tourist economy along with them. The state of Chiapas, where the falls trickle near the ancient Mayan ruins of Palenque, was the epicenter of the 8.2-magnitude earthquake that struck Mexico on September 7, killing 96 […]