The document discusses the goals and design principles of a travelling wave reactor (TWR). Key points: 1. The TWR aims to reduce proliferation risks and convert depleted uranium and other nuclear waste into energy through a simple fuel cycle that uses nuclear transmutation. 2. In a TWR, fission occurs in a boundary zone that slowly advances through the core over time, converting fertile material in front into fissile fuel. This allows it to use depleted uranium fuel efficiently without enrichment or reprocessing. 3. Terra Power is developing TWR designs that would be self-sustaining for decades without refueling and produce electricity without human intervention through a breed-and-burn