Agence France-Presse: An acute drought in Brazil has hit the famed horseshoe-shaped Igauzu falls which straddle two countries, cutting back the tumbling waters to reveal the rocky sides. Only a third of the usual volume of water is now flowing over the top of the stunning falls, which were listed as a world heritage site by UNESCO in 1984 and border both Brazil and Argentina, Globo television said. At the foot of the falls on the Brazilian side, the bottom of the Parana river is now clearly visible, …