Children travel in a basin through a flooded street in Nezahualcoyotl near Mexico City June 27, 2011. Torrential rain from several different weather systems on Sunday caused the rupture of a dam in Nezahualcoyotl, flooding the area and more than 400 homes, according to local media. [Photo/Agencies]

A Linnaeus two-toed sloth (Choloepus didactylus) is seen at a zoological park in Managua June 27, 2011. Nicaragua is hosting the first regional workshop of the Convention on International Trade in Endangered Species of Wild Fauna and Flora. [Photo/Agencies]