What is cholecystitis?Cholecystitis is inflammation of the gallbladder, a small organ near the liver that plays a part in digesting food. Normally, fluid called bile passes out of the gallbladder on its way to the small intestine. If the flow of bile is blocked, it builds up inside the gallbladder, causing swelling, pain, and possible infection. What causes cholecystitis?A gallstone stuck in the .
jet stream. A narrow current of strong wind circling the Earth from west to east at altitudes of 10 to 15 miles (16 to 24 kilometers) above sea level. There are usually four distinct jet streams, two each in the Northern and Southern Hemispheres.
Importance of the Jet Stream. In terms of commercial usage, the jet stream is important for the airline industry. Its use began in 1952 with a Pan Am flight from Tokyo, Japan to Honolulu, Hawaii. By flying well within the jet stream at 25,000 feet (7,600 meters), the flight time was reduced from 18 hours to 11.5 hours. The reduced flight time and aid of the strong winds also allowed for a reduction in fuel consumption.