rpHE Navy lias undertakeh an investiga tion of the ghost rivers of air which were first discovered during World War 11. The streams of air, which move several hundred miles an hour, have been respon sible for many strange experiences of pilots. Crews of B-20 bombers over .Japan in World War II often reported they en countered strange atmospheric antics at 20,00(1 to HO.000 feet. They reported they suddenly seemed to stand still in mid-air. On other occasions, the air outside their planes suddenly registered tropical warmth and changed back quickly to artic cold. The cause of these jet streams is not. yet definitely determined, although one ex planation is that they are caused by warm air from the equator colliding with frigid

56.7%