Why Do We Burp and Fart (So Much)?!

We all do it, but why? Hank explains the whys and hows of our gaseous emissions.

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Sources:
http://discovermagazine.com/1995/apr/whatagas494#.Up61ocRDt4A

http://news.yahoo.com/flying-increases-flatulence-sake-health-let-171100518.html

http://www.mensfitness.com/training/lowdown-flatulence

http://www.webmd.com/heartburn-gerd/tc/gas-bloating-and-burping-topic-overview

http://www.nlm.nih.gov/medlineplus/ency/article/003080.htm

http://www.nlm.nih.gov/medlineplus/gas.html

Belching, Bloating, and Flatulence

http://digestive.niddk.nih.gov/ddiseases/pubs/gas_ez/

http://www.uptodate.com/contents/gas-and-bloating-beyond-the-basics?view=print

Images:

http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/19608.jpg

http://www.nlm.nih.gov/medlineplus/ency/images/ency/fullsize/19651.jpg

http://commons.wikimedia.org/wiki/File:Fart.svg

http://www1.extension.umn.edu/food/farm-to-school/toolkit/promoting-food/img/NH_beans_print.jpg

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