Shortness of breath is by far the most common of emphysema symptoms. Most people with emphysema first notice something's wrong when they become winded during a previously routine activity. This might be climbing stairs or mowing the lawn. The shortness of breath in emphysema results from structural changes in the lungs.
The population in Lagos jumped significantly in a short period of time. In 2011, it was estimated to only have 11.2 million people. Prior to then, Cairo was the most populous city in Africa. Lagos is thought to be responsible for one-fourth of Nigeria's gross domestic product. An oil boom and a growing economy are thought to contribute to the fast population growth.
Nairobi and Cape Town rank among the most advanced cities on the African continent on the smart city front. Nairobi, capital of Kenya and home to over three million people, won the title of Most Intelligent City in Africa for two years in a row. Going south, Cape Town blossoms as one of the best places to do business in the continent as the South African government continuously implements thoughtful planning and cutting edge technology to attract businesses and improve the lives of its citizens.