The troposphere is the lowest level of the atmosphere, so it is in contact with the Earth's surface. In contrast, the stratosphere is located above the troposphere, so it is not in contact with the Earth's surface. ... The air density and air pressure are much lower in the stratosphere.
There's no way of getting around death as a theme of Love in the Time of Cholera. The title itself refers to a highly infectious disease that was often fatal to those who contracted it.