Seismic wave data previously suggested the Earth’s hot inner core is slowing its spin. Now, researchers say it’s also ...

Two huge masses deep within Earth may have remained stable for billions ... That stability may also mean these objects are extremely old, with origins going back at least half a billion years ...

They challenge our understanding of what is possible in nature and prompt a reevaluation of how nuclear processes are considered in the context of Earth’s geologic history and possibly on other ...

Changes in Earth's orbit have helped pace climatic change for millennia. Scientists are now trying to understand whether - and how - these changes remodeled the landscapes our ancient ancestors ...