Conference Organization
 Local Organizer of the
Southeast Geometry
Seminar XXV
Knoxville, TN, October 2014.
 Chair of the Organizing Committee for the
2013 Barrett Lectures
on the proof of the Willmore Conjecture
Knoxville, TN, May 2013.
 Coorganizer of the
Geometric Analysis and Mathematical Relativity
Session of CADS VI International Conference
Nahariya, Israel, May 2013.  Local Organizer of the
Southeast Geometry
Seminar XXI
Knoxville, TN, December 2012.
 Chair of the Organizing Committee for the
2011 Barrett Lectures
in Mathematical Relativity
Knoxville, TN, May 2011.
[Slides and videos of the talks]  Local Organizer of the
Southeast Geometry
Seminar XVII
Knoxville, TN, December 2010.
Invited MiniCourses

2013 Summer Graduate Workshop: Mathematical
General Relativity
Cortona, Italy, August 2013.
[Sponsored by Clay Mathematics Institute, INDAM, MSRI and SMI.] 
29 Coloquio Brasileiro de Matematica
Rio de Janeiro, Brazil, July 2013.
[Had to cancel minicourse because of scheduling conflict.] 
Minicourse on the Riemannian Penrose Inequality at the CMM of the
University of Chile
Santiago, Chile, September 2012.

2012 MSRI Summer Graduate Workshop in Mathematical
Relativity
Berkeley, CA, July 2012.
[Sponsored by MSRI and NSF]
Undergraduate Mentoring
 L. Brown, CSURE REU at JICS
Knoxville, TN, Summer 2014.  Z. Xiang, CSURE REU at JICS
Knoxville, TN, Summer 2014.  T. Kandhawit, PRUV Fellow at
Duke
Durham, NC, Spring 2006.
General Audience Talks
 In December of 2010 I organized a general audience lecture at the University of Tennessee given by Hugh Bray. His talk entitled "From Black Holes and the Big Bang to Dark Energy and Dark Matter: Successes of Einstein's Theory of Relativity" was a great success. It was attended by over one hundred highschool students.