Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising temperatures are once again causing the world’s oceans to turn green.
Fossils and genetics are starting to point to life emerging surprisingly soon after Earth formed, when the planet was ...
From the beginning of time to the origins of life, our "when" special series tackles the timing of crucial events and the ...
Scientists in Egypt discovered a not-before-known apex predator that lived 30 million years ago, potentially helping to solve an extinction mystery.
The giant-impact hypothesis posits that billions of years ago a Mars-sized body named Theia collided with the early Earth.
Tropical riparian ecosystems—those found along rivers and wetlands—recovered much faster than expected following the ...
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What the Climate 13M Years Ago Could Tell Us About Our FuturePICKS are stories from many sources, selected by our editors or recommended by our readers because they are important, ...
Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...
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