Overview. If you frequently experience shortness of breath or you hear a whistling or wheezy sound in your chest when you breathe, you may have asthma â a chronic condition that causes inflammation and narrowing of the bronchial tubes, the passageways that allow air to enter and leave the lungs.
1 At 47,958 kilometres (29,800 miles) in total length, the Pan-American Highway is the longest road in the world.  The road starts in Alaska, North America and ends in the lower reaches of South America.
The majority of the worldâs 12 longest road bridges are located in China and United States of America. The worldâs longest however, the Bang Na Expressway, is located in Thailand. The majority of the world's 12 longest road bridges are located in China and United States of America. The world's longest however, the Bang Na Expressway, is located in Thailand. Roadtraffic-technology.com lists the world's 12 longest road bridges based on length.