Nearly three-quarters of our planet is covered by oceans. How did these powerful bodies of water form? How have they changed over time? How do they affect weather and climate? And what lifeforms lie in their darkest depths?
Nearly three-quarters of our planet is covered by oceans. How did these powerful bodies of water form? How have they changed over time? How do they affect weather and climate? And what lifeforms lie in their darkest depths?