As much as we should appreciate and protect the atmosphere that immediately embraces this planet, the other layers of the atmosphere are essential too and provide services we may not readily ...

But when I am talking about the atmosphere, I am referring to the layer closest to Earth, the troposphere, where all weather occurs. Of course, there are multiple layers to the atmosphere.

1 He observed that “somewhere in the atmosphere below a height of 15.5 km. the intensity of the ionisation within a closed vessel exposed to the rays goes through a maximum, and then decreases”.

Researchers have also found a small amount of oxygen in a thin layer of the planet's atmosphere, though it is atomic oxygen (O), not the molecular oxygen (O2) we breathe. In comparison ...

The answer comes more readily if the question is altered to, Why does the isothermal condition of the outer layers of our atmosphere suddenly cease at about 40,000 feet? The isothermal condition ...