New research shows ancient tropical oceans once held more oxygen than cooler regions, reshaping where early life could ...

The ocean covers more than two-thirds of the planet and remains one of the most unexplored and mysterious environments on ...

Add Yahoo as a preferred source to see more of our stories on Google. The ocean covers more than 70 percent of the Earth's surface. Considering how vast it is, scientists know relatively little about ...

VIRGINIA BEACH, Va. — The ocean covers more than 70% of Earth's surface, yet remarkably, we’ve explored only about 5% of it. Despite this mystery, what we do know reveals just how vital — and ...

Our planet is unique for its ability to sustain abundant life. From studies of the rock record, scientists believe life had already emerged on Earth at least 3.5 billion years ago and probably much ...

Scientists have uncovered a surprising mechanism that may explain how Earth cooled dramatically after the age of dinosaurs.

Explore mind-bending revelations in "25 Astonishing Facts About The Earth That Will Confuse You." Unveil secrets from ...

Evidence from fossil shells suggests that falling seawater calcium helped lock away carbon dioxide and helped cool Earth after the dinosaurs.

Our oceans are incredible scientific marvels, and there’s a lot to learn about these amazing bodies of water. You may have learned in school that oceans cover about 70% of the Earth. Still, although ...

Earth's oceans, known for their deep blue hue, could one day undergo color shifts, say scientists. A report based on a study published in Nature suggests that our oceans have not always been blue, and ...

Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...