[GingisK]

I recall that the prevailing theory was that the Earth built an atmosphere over time. This finding tends to support that notion.

[WhiskeyX]

Origin of the Earth’s Atmosphere
http://www.ux1.eiu.edu/~cfjps/1400/atmos_origin.html

The Climate System
EESC 2100 Spring 2007
Lectures - Monday and Wednesday, 11:00 AM - 12:15 PM
Lab - Tuesday, 4:10 PM -7 PM

http://eesc.columbia.edu/courses/ees/climate/lectures/earth.html