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The 10 most pristine places on Earth

April 25, 2011, 7:42 p.m.
Papua New Guinea

Photo: Dreamstime

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Papua New Guinea

Papua New Guinea is one of the most rural and least explored places in the world. Scientists believe that many of the world's undiscovered species of plants and animals exist in the jungle interior of the country. Exploitation of the country's vast natural resources has been hampered by rugged terrain, as well as the difficulties with the legal system and the high cost of developing infrastructure. Because of all these human problems, the landscape remains largely tough and untouched.