For millions of years, Earth’s shifting plates have shaped continents, formed oceans, and built towering mountain ranges. But ...

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 ...

Scientists propose Earth ... a million-year stay near dense star nurseries, possibly cooling the planet as Antarctica’s ice grew. Gaia data shows our solar system swung within 65 light-years ...

Cambridge University researchers have uncovered evidence that two distinct populations of ancient hominins, separated for ...

which is thought to have been blown by a series of supernova explosions 10 to 20 million years ago. Earth seems to have entered this bubble about 6 million years ago. Passing through the outer ...

Between 36 and 20 million years ago the earth experienced the first of three major cooling steps. At this time a continental-scale temperate ice sheet emerged in East Antarctica. Meanwhile ...

New research suggests the violent explosions of dying stars may have caused two of Earth’s biggest mass extinctions millions ...

A new study suggests this cosmic journey may have influenced Earth's climate millions of ... found that around 14 million years ago, the solar system passed through a dense, star-forming region ...

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 ...