Earth System Science 1: Introduction to Earth System Science
Dramatic falls into bottomless pits are largely the stuff of fantasy, but here’s a thought experiment: How long would it take you to fall through the Earth if a tunnel went from one side to the other? Learn more at HowStuffWorks: http://science.howstuffworks.com/environmental/earth/geophysics/question373.htm Subscribe | http://bit.ly/stbym-sub Homepage | http://bit.ly/stbym-hsw-home Listen to us | http://bit.ly/stbym-itunes Like us … Read more