Scientists discovered hidden phosphorus spikes in ancient limestone that may help explain two of Earth’s worst marine mass ...

They stopped at Kentucky road cuts searching for Ordovician fossils from a time when the area was underwater. At first, the finds looked like ordinary shell fossils scattered through the rock. Then ...

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See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Back when the Earth was crawling with trilobites and other strange ...

Earth’s first mass extinction: When anyone thinks of mass extinction on Earth, the first thing they think of is the extinction of dinosaurs about 66 million years ago, likely as an impact of comet or ...