Scientists warn that Earth faces an unusual danger as glaciers disappear. About 1,000 glaciers vanish each year, and this ...

For decades, geologists have known that a huge portion of Earth’s earliest continental crust simply vanished from the rock record, as if someone had torn out the opening chapters of the planet’s ...

Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than previously thought — and may be a big reason that our planet harbors life. When you ...