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.
Route 6: Longest Contiguous Highway in the United States. By Traci Suppa (October 24, 2012 at 5:22 am) Â· Filed under guest post, Longest, Road trip, Roadside Attractions, Highway. Sure, I hear the call of the open road every once in a while.