Earth's oceans could one day turn purple. 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 ...

A new study suggests that the Earth’s oceans may have changed color over time and could change again in the future, depending on the chemical makeup of the water. The oceans were likely once a vibrant ...

Its green variety, and certainly the purple version, is less appreciated. This is unjust because the purple variety can ...

The first life forms used retinal instead of chlorophyll, absorbing green light and reflecting red and blue—turning the planet an eerie purple. Chlorophyll wasn’t always king. Retinal ...

To understand how our oceans could have once been colored green, researchers at Nagoya University ... the oceans may appear purple due to intense volcanic activity and low oxygen in the atmosphere.

New research suggests Earth’s early oceans were not blue—but green. Rich in iron and glowing with microbial life, they looked nothing like the oceans we know today. Early blue-green algae ...

It will lead to more purple, brown, or green hues in coastal or stratified areas, with less deep blue color in water as phytoplankton decline. Eventually, oceans will evaporate completely as the ...