In shallow coastal waters around the world, mud and other fine-grained sediments such as clay and silt form critical blue ...

Mars today is a cold, desert-like world, but the discovery of ancient shorelines suggests that the planet once had a dynamic ...

An unusual depiction of the ancient Egyptian sky goddess Nut may include a representation of the "Dark River" or "Great Rift" ...

The changes in ocean chemistry were gradual. The Archaean period lasted 1.5 billion years. This is more than half of Earth’s ...

These features imply a large, liquid ocean, fed by rivers dumping sediment ... and suggests a place to look for signs of ...

Ancient Greek sailors, whose sails caught the winds of curiosity and ambition, were among the earliest to venture beyond ...

"We’re finding places on Mars that used to look like ancient beaches and ancient river deltas," said Penn ... like Mars was likely home to massive oceans as well, which would be "potentially ...

The reason Earth's oceans may have looked different in the ancient past is to do with their ... iron which was then carried to the oceans by rivers. Other sources of iron were volcanoes on the ...

Roughly between 3.8 and 1.8 billion years ago, during the Archean eon when life was confined to single cells in the oceans, rainfall eroded iron from continental rocks. Rivers subsequently carried ...

Squat rhinos lived in North America about 12 million years ago, congregating in huge, water-bound herds much like modern hippos.

A new global assessment has brought a dose of good news for conservationists: Decades of work to protect some of the ocean’s most ancient sea turtle populations are looking to be paying off.

The reason Earth's oceans may have looked different in the ancient past is to do with their ... iron which was then carried to the oceans by rivers. Other sources of iron were volcanoes on the ...