Earth’s oceans weren’t always blue, scientists say
But while lifeless during that time, the planet was already covered by vast oceans dotted with hydrothermal vent systems that ...
Daily Galaxy on MSN1mon
Earth’s Oceans Were Once Green—And They Might Be Turning Green Again
For most of human history, Earth has been known as the “Pale Blue Dot ... But for billions of years before that, our planet’s ...
Interesting Engineering on MSN7d
Could alien oceans be green: Earth’s past may hold the key to finding life elsewhere
Researchers have found that Earth’s first oceans may not have been blue at all like today. Instead, they may have gleamed in ...
National Geographic news4y
Planet Earth, explained
Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...