A tsunami triggered by a landslide in a remote, uninhabited part of Greenland shook the entire Earth for nine days, ...
During the time 485 to 443 million years ago, known as the Ordovician period, Earth was already in the throes of a serious ...
Saturn’s rings are iconic, but new evidence suggests Earth might once have sported one of its own. This ring would have ...
Researchers have proposed that Earth may have had a ring system 466 million years ago, during a period of intense meteorite ...