Chiari Malformation. Chiari malformations (CMs) are structural defects in the cerebellum, the part of the brain that controls balance. When the indented bony space at the lower rear of the skull is smaller than normal, the cerebellum and brainstem can be pushed downward.
Slum Tours: Ecotourism or Exploitation? In Kenya's capital, one of the most lucrative -- and controversial -- effects of ecotourism has been the proliferation of tours through Kibera slum, home to more than 1 million people, almost a third of Nairobi's population.
Another place where ecotourism is popular is in Indonesia at Komodo National Park. The park is made up of 233 square miles (603 sq km) of land that is spread out over several islands and 469 square miles (1,214 sq km) of water.