1) Dan's journey around the world learning, researching, and eventually teaching

2) The various subjects Dan has taught and a little bit about them, whether it be reactor physics and theory, reactor engineering, or experimental reactor physics

3) How Dan's background led him to space propulsion systems and a deep dive into his current work in the area

4) How Dan believes the "flying nuclear reactor" that brings students into his lab might come to fruition or develop in the coming years