Three billion years ago, you could have stood on Mars and watched a river spill into a sea. That picture is still speculative ...

Scientists have traced ancient Martian shorelines inside a giant canyon, revealing where a vast ocean once stood and why ...

Research reveals when and why ancient tropical seas transitioned from oxygen oases to marine dead zones, providing clues to ...

Scientists in Japan discovered microscopic fossils revealing that the North Pacific Ocean was once more interconnected. The findings offer clues about ancient currents, marine life migration and ...

New research from Adelaide University suggests the power of the ancient Tethys Ocean might have shaped Central Asia's ...

Elisabeth Sikes (left), with Dale Hubbard of Oregon State University, alongside the large coring block used to collect deep-ocean sediment samples during the research cruise. Climate change has many ...