The research of Craig Tweedy of the Systems Ecology Laboratory with the UTEP Department of Biological Sciences. Tweedy studies how ecosystems function and interface with the atmosphere. He talks about the gradual transformation of the Paso del Norte region from grasslands to shrublands over the past few centuries. http://faculty.utep.edu/Default.aspx?alias=faculty.utep.edu/ctweedie
Aired April 17, 2014.