Electronic/World Wide Web>Internet Article:  Climatesight, Kate (09/26/2010), Does breathing contribute to CO2 buildup in the atmosphere?, Retrieved on 2014-07-22

Source Material [www.skepticalscience.com]

Electronic/World Wide Web>Internet Article:  Krulwich, Robert (June 21, 2013), Every Night You Lose More Than A Pound While You're Asleep (For The Oddest Reason), National Public Radio, Retrieved on 2013-06-23

Source Material [www.npr.org]