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 African city with the largest population is Lagos, Nigeria. In 2014, the city was estimated to have a population of 21 million people.
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.