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10 challenges created by a population boom

By: Robynne Boyd on July 10, 2015, 4:50 p.m.
A man walk past the rubble following the May 12 earthquake in Nepal.

Photo: Jonas Gratzer/Getty Images

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When Earth shakes

Nature is a powerful force. It has the ability to mesmerize with ephemeral rainbows, countless stars, and majestic views. It can also level cities, flood homesteads and burn buildings. With a 7.8-magnitude earthquake in Nepal, Earth flexed its muscles this past April and brought disaster from Kathmandu to Everest. It killed more than 8,500 people, and left an additional 8 million struggling for water, food and shelter. It was particularly deadly in Kathmandu (seen at the right), with its tall buildings and high population density. Other recent natural disasters include California's drought, Chile's earthquake and tsunami, and the typhoon in the Philippines.