Interactions between Earth and the solar system have profoundly shaped the planet’s history, influencing evolution and climate. One striking example is the asteroid impact 66 million years ago ...

Researchers have found that Earth’s first oceans may not have been blue at all like today. Instead, they may have gleamed in ...

A day on Earth was just 23.5 hours long, 70 million years ago. Researchers discovered this by studying the growth rings of ancient mollusk fossils. The findings could tell us more about or planet ...

About 800 million years ago, oxygen levels reached about 21 percent and began to breathe life into more complex organisms. The oxygen-rich ozone layer was also established, shielding the Earth's ...

Although Earth itself cohered into a planet around 4.5 billion years ago, most estimates suggest it took at least another 800 million years before the earliest lifeforms developed. But while ...

Earth didn’t just go through one deep freeze ... located in present-day Scotland and Ireland. Formed about 800 million years ago on the eastern shore of a past continent called Laurentia ...