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Doctor Nun combines love of God and science

A nun's devotion to God has led her to Knoxville. Sister Mary Gretchen Hoffman is called a "walking nun." She also uses her love of science to help others as well.

http://www.wbir.com/video/2094262498001/0/Doctor-Nun-combines-love-of-God-and-science http://download.gannett.edgesuite.net/wbir/brightcove/29913744001/29913744001_2094274160001_th-50f49ea6e4b087a4252751e4-806787304001.jpg?pubId=29913744001 Doctor Nun combines love of God and science A nun's devotion to God has led her to Knoxville. Sister Mary Gretchen Hoffman is called a "walking nun." She also uses her love of science to help others as well. 10N@5wbirNews 02:15

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