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 ...
Interesting Engineering on MSN3d
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 ...
PBS12y
Greenhouse - Green Planet
Gases within the atmosphere act like glass, trapping the sun's heat ... and reflecting it back towards the Earth. The more greenhouse gases in the atmosphere, the more heat that is trapped.
Daily Galaxy on MSN1mon
Earth’s Oceans Were Once Green—And They Might Be Turning Green Again
Instead, they were a striking shade of green, shaped by ancient microbial life and the chemical composition of early seas.