Scientists investigate the role of the 'silent killer' inside deep-diving animals
Thursday, May 15, 2014 - 09:32
in Physics & Chemistry
Scientists have furthered science's understanding of carbon monoxide's natural characteristics and limitations by studying the gas in one of the world's best divers: the elephant seal. Colorless and odorless, carbon monoxide (CO) is now monitored in many homes with inexpensive detectors. In human bodies, CO is produced naturally as a byproduct of the breakdown of hemoglobin -- molecules responsible for transporting oxygen -- inside red blood cells. To their surprise, researchers discovered that carbon monoxide is bound to 10 percent of the hemoglobin in adult elephant seals, or 10 times the amount found in healthy humans, and roughly comparable to someone who smokes 40 cigarettes per day.