oceans on earth

Does the Earth have 1, 4 or 5 oceans? This seems like a simple question, but the answer is still not agreed upon by scientists.

Although Mars may be some 225 million kilometers away from Earth, the planet is already affecting the climate where humans live, according to new research.

Earth oceans are acidifying at an unprecedented rate of history and will threaten the lives of all marine life in the world if people do not soon take action.