Explore the origins of Earth's abundant water supply in this 22-minute educational video. Delve into various hypotheses explaining water's presence on our planet, from early solar system formation to impacts and outgassing. Learn about water-containing rocks, oceans in Earth's interior, and the use of isotopes to track water's origins. Discover potential water sources on other planets and understand the importance of unraveling water's history. Examine the complexities of isotope tracking and gain insights into further learning resources on this fascinating topic.