Atmosphere of Earth trend begin above 11 km, where the temperature stabilizes through a large vertical distance through the rest of the troposphere. In the stratosphere, starting above about 20 km, the temperature increases with height, due to heating within the ozone layer caused by capture of significant ultraviolet radiation from the Sun by the dioxygen and ozone gas in this region. Still another region of increasing temperature with altitude occurs at very high altitudes, in the aptly-named thermosphere above 90 km. Because in an ideal gas of constant composition the speed of sound depends only on temperature and not on the gas
Burning Like the Midnight Sun the Midnight Sun" has received some of the most positive reviews of any album in the band's career. Jeff Eibel, writing for the Spin Control column in the "Chicago Sun-Times", called The Choir's latest release "a late-career triumph," and remarked that "Midnight Sun" was the band's "second exceptional album in a row, and its best since 1990's landmark "Circle Slide"." "Christianity Today"′s Andrew Greer highlighted the band's ability to create "smooth musical clarity to contrast the murky exploration of everyday faith," while "The Phantom Tollbooth"′s Derek Walker called "Midnight Sun" a "sonic delight" and The Choir's "most cohesive, melodic and