Nearly three-fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese researchers have made a compelling case that Earth's oceans were once green ...

Fusulines thrived in cold seas but vanished twice when warming from volcanoes rapidly spiked ocean carbon levels.

The reason Earth's oceans may have looked different in the ancient past is to do with their chemistry and the evolution of photosynthesis.As a geology undergraduate student, I was taught about the ...

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 ...

Pale green dot. The oceans were likely once a vibrant green color between 3.8 and 1.8 billion years ago, according to a study published in the journal Nature Ecology & Evolution.During this period ...

More than 20% of the Earth's oceans have darkened over the last 20 years, according to University of Plymouth research. ... so you can treat your pet to something nice — without breaking the bank.

We can imagine different ocean colours without borrowing too much from science fiction. Purple oceans would be possible on Earth if the levels of sulphur were high .

Affected swaths of ocean are roughly the same size as Africa, China, Europe and North America's land areas combined. More than 20% of the Earth's oceans have darkened over the last 20 years ...