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Last updated on April 17, 2014 at 21:23 EDT

Latest Jim Ehleringer Stories

Measuring CO2 To Help Fight Global Warming
2012-05-15 06:46:02

University of Utah and Harvard scientists develop way to enforce future greenhouse gas treaty If the world's nations ever sign a treaty to limit emissions of climate-warming carbon dioxide gas, there may be a way to help verify compliance: a new method developed by scientists from the University of Utah and Harvard. Using measurements from only three carbon-dioxide (CO2) monitoring stations in the Salt Lake Valley, the method could reliably detect changes in CO2 emissions of 15 percent...

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2008-02-26 00:35:00

Researchers at University of Utah reported Monday that a single strand of  hair can reveal a history of which areas within the United States a person has been living or spending time.The scientists compared variations in isotopes of hydrogen and oxygen found in strands of hair to those of tap water in various areas of the country. They found the isotopes corresponded, and were able to use this information to determine a person's location during recent weeks to years.Isotopes are forms of...