The Earth’s atmosphere is the relatively thin layer of gases surrounding the planet. The atmosphere is held close to Earth by gravity, but the higher you go away from the Earth’s surface ...

Although the troposphere is often thought of as the closest layer of the atmosphere to the Earth's ... In the past four years, Lincoln Laboratory staff have been studying the PBL, focusing on ...

With that the amount of alumina released into the mesosphere and upper stratosphere — the otherwise pristine middle layers of the atmosphere — has been skyrocketing. Air pollution in the ...