1) American lifestyle magazine 2) Rock opera 
[magazine] Hemispheres is the onboard magazine for United Airlines. With a readership of approximately 12 million per month, Hemispheres ranks as the most-honored inflight magazine in the U.S., having won more prestigious awards than any other. In 1947, United became the first airline to have an inflight publication. However, Hemispheres wa...
[pronounce: hem-ee-sfears] The two halves of a sphere - the shape you would get if you cut a ball in half.
each half of the brain is known as a hemisphere