We breathe constantly, but have you ever thought about how breathing works? Discover the ins and outs of one of our most basic living functions-- from the science of respiration to how to control your breaths.
Physiology of Breathing http://en.wikipedia.org/wiki/Breathing
National Heart, Lung and Blood Institute / Respiratory System http://www.nhlbi.nih.gov/health/health-topics/topics/hlw/system.html
Yoga Books in the Public Library - Dewey Decimal Number 613.00
Intergovernmental Panel on Climate Change www.ipcc.ch