How old is Earth? Our planet's age is known from a variety of sources, from rocks on our own planet to ones from the moon.

This model reveals how vastly different the atmosphere was on ancient Earth, and how life may have first emerged.

The tightly sandwiched layers of rock preserved a mineral timeline that allowed the researchers ... this is very good news for the evolution of early life on Earth, as impacts would have been ...

A new study predicts a grim future for humanity as Earth's continents drift towards ... will be created will be too hot and dry for most life forms to survive. This extreme heat will be caused ...

Researchers have uncovered physical evidence indicating that Earth was entirely frozen during the “Snowball Earth” period, ...

Researchers at Harvard's Paleomagnetics Lab have made a compelling case that Mars' magnetic field, which could have supported life, lasted until 3.9 billion years ago—much later than previously ...