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 longest interstates in the U.S. are ones that go coast-to-coast and end in zeros. Interstate 90 connects Boston to Seattle and is more than 3,000 miles long. Interstate 80, which runs from just west of New York City to San Francisco is next, and Interstates 40 (Wilmington, NC to Barstow, CA) and 10 (Jacksonville, FL to Santa Monica, CA) are also among the longest. Written Jul 22, 2015 â¢ View Upvotes.