Jess Thomson is a Newsweek Science Reporter based in London UK. Her focus is reporting on science, technology and healthcare. She has covered weird animal behavior, space news and the impacts of ...

Earth's inner core is a roughly moon-size chunk of solid iron and nickel that lies more than 3,000 miles (4,800 kilometers) below our feet. It is surrounded by the outer core — a superhot layer ...

Scientists have raised concerns that the Earth's inner core may completely halt its rotation by 2040, according to a recent paper published in Nature. The study suggests changes are occurring deep ...

Exactly when that will happen is being influenced by humans, according to a new study, as melting polar ice alters the Earth’s rotation and changes time itself. The hours and minutes that ...

STOCK PHOTO/Getty Images Since 1972, UTC has been modified by adding "leap seconds" when necessary, because the Earth's rotation rate is inconsistent, Britannica notes. The added second of UTC ...

The world is hungry for renewable sources of energy, which has led some scientists to ask the question: what about the rotation of the Earth? A new study reports that researchers have successfully ...

Global warming has slightly slowed the Earth’s rotation — and it could affect how we measure time. A study published Wednesday found that the melting of polar ice — an accelerating trend ...

"This means that a shift in mass is taking place, and this is affecting the Earth's rotation," explains Benedikt Soja, Professor of Space Geodesy at the Department of Civil, Environmental and ...

Earth’s inner core may have slowed its rotating and could have started to move more slowly than the mantle, according to a new study. Seismic waves from earthquakes that have moved through the ...