There's a billion-year gap in Earth's geological history. A new study seeks to explain the mystery.

Much of our understanding of Earth's past is derived from stratigraphic records exposed in rock outcrops or recovered from drilled cores. These records span immense time intervals, from thousands to ...

Most major geological events in Earth's recent history have clustered in 27.5-million-year intervals — a pattern that ...

A potential new mineral on Mars forms when iron sulfates are heated above 100°C. Data from Valles Marineris regions suggest ...

Houchin and his colleagues studied dozens of zircon crystals from the Jack Hills in Western Australia. These are the oldest ...

Gravity may seem constant, but it actually varies across the planet—and one of the strangest places is Antarctica, where ...

Earth froze over 717 million years ago. Ice crept down from the poles to the equator, and the dark subglacial seas suffocated ...

There are many open questions about how our planet formed 4.55 billion years ago: When did plate tectonics start? When did the Earth's mantle begin to vigorously circulate in a process called ...

In the 20th century, scientists began to suspect Earth was a lot older than we thought. It was our old friends/deadly foes, uranium and lead, that provided the first evidence.

Around 1.7 billion years ago, eukaryotes—the building blocks of complex life—first appeared on Earth, and now scientists have ...

Without the Moon, researchers say Earth could experience far more extreme climate shifts, unstable seasons and dramatically weaker tides - fundamentally altering life on the planet.