Planetary scientists search for ancient impacts to learn about Earth’s early formation. So far, nobody has found an impact ...

Researchers recently discovered a huge chain of extinct volcanoes buried deep below South China that formed when two tectonic ...

Earth's first continents may have emerged from the oceans roughly 750 million years earlier than previously thought, rising from the seas in a manner completely unlike modern continents.

Since the planet Earth formed roughly 4.5 billion years ago, this puts the rocks within a few hundred million years of our planet’s earliest day–somewhat close in geological time.

As the Cambrian gave way to the Ordovician Period about 485 million years ago, that percentage climbed, partly reflecting the "Cambrian Explosion," when life on Earth dramatically expanded in ...

Around 252 million years ago, life on Earth suffered its most catastrophic blow to date: a mass extinction event known as the “Great Dying” that wiped out around 90% of life. What followed has ...

Scientists thought this crater in Australia was the world’s oldest – but an independent analysis shows they might be off by 800 million years.