Whale Wax
Monday,
Sep 30
Sep 30
"Scientists in the past have used this waxy matrix as an aging tool, similar to counting tree rings. Then, the question arose: Could whale earwax chronologically archive chemicals, such as man-made pollutants?" said Usenko, assistant professor of environmental science in Baylor's College of Arts and Sciences.
"Whales are free-ranging animals and you can't get these types of profiles or information on free-ranging animals in any part of the world. This has never been done before," said Trumble, assistant professor of biology in Baylor's College of Arts and Sciences.
The most recent study concerns an endangered blue whale killed by a ship near California. The blue whale’s earplug revealed that levels of stress hormones doubled over the course of its life as it struggled to cope with a man-made handicap. We now know just how much damage we’ve done by dumping excessive amounts of flame retardant chemicals and other pesticides into the ocean for far too long.
Sources:
http://www.sciencedaily.com/releases/2013/09/130923143640.htm
http://www.scientificamerican.com/podcast/episode.cfm?id=whale-ear-wax-reveals-environmental-13-09-24
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