Our planet may have had a recent change of heart. Earth’s inner core may have temporarily stopped rotating relative to the mantle and surface, researchers report in the January 23 Nature Geoscience.

Modern humans have lived on Earth for more than 300,000 years, but we’re still discovering tons about this massive breathing rock we call home. From its deep 4.5-billion-year history to its current ...

Even when Earth was locked in its most extreme deep freeze, the planet’s climate may not have been as silent and still as once believed. New research from ancient Scottish rocks reveals that during ...