- St. Edward's College, Austin, TX. Sliding Scales: Tools for predicting and understanding molecular structure from paper and pencil to Beowulf clusters Lucian symposium, 29 September 2017
- St. Denis, Havertown, PA 14 November 2017
- Asteroids, Stars and the Love of God at Main Line School Night, 16 November 2017 (Register here)
- The Good, the Bad, and the Chemistry: Decoding Chemical Sensationalism Wagner Science Museum, November 2017
- Boston College, 6 December 2016
- Are scientists mystics? Cosmos and Creation keynote speaker, June 2018.
- Sienna College, 1 October 2018
Recent retreats and talks
- What did Jesus pray? Our Mother of Good Counsel, March 23, March 30 and April 6, 7:30 pm
- Science is not a synonym for secular, The Catholic Scientist, St. Joseph's Seminary, New York, March 3.
- Be still and know that I am God: praying through busy seasons, Advent by Candlelight, December 2016 St. Anastasia's, Newtown Square, PA
- In the Thicket of this World: Doing Science as a Person of Faith, Ducharme Lecture, November 2016, Mount St. Mary's University, Emmitsburg, MD.
- Mercy-ing, February 3 at the IHM Conference Center, Bryn Mawr, PA
- How to work at the subtle edge: What contemplatives can teach scientists Meditation, TechnoScience and Humanity, 30 October 2015, Barcelona, Spain
- Walking the edge: science and religion, Episcopal Church of the Redeemer, October 2015
- Working at the subtle edge: the intersection of science and religion, 18 November 2014. The Institute for Science and Religion at Chestnut Hill College.
- Give me a word: practical wisdom from the desert solitaries Immaculata University Spirituality Days (3 afternoon series) June 2014
- God Walks Among the Pots and Pans, at Spirituality Under the Dome, Immaculata University, 12 April, 2014.
- Working at the subtle edge of things: the intersection of faith and science at St. Catherine University, St. Paul, MN, 20 February 2014
- Praying from today into tomorrow: St. Ignatius of Loyola's Examen at St. Margaret, Narberth, PA 7-8 pm 10 April 2013
- Trip to the Desert: Praying with the Desert Fathers and Mothers at Our Mother of Good Counsel Parish, Bryn Mawr, Three part series March 2013 Listen to the series here.
- Of garlic and sapphires in the mud: It's about time A New Year's Reflection at the IHM Conference Center, Bryn Mawr, PA 15 January 2013.
- Be still and In quiet and trust St. Simon Stock, Berlin, NJ 16 and 17 December 2013.
- Springs in the desert, day of reflection for Catholic Social Services (Archdiocese of Philadelphia) 18 and 24 October 2013.
