New research suggests that dark energy isn't needed to explain the acceleration in the expansion of the universe — instead ...

Here’s how it works. Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds. Known as large low-seismic-velocity provinces (LLSVPs), these ...

Credit: KATERYNA KON/SCIENCE PHOTO LIBRARY via Getty Images Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds. Known as large low-seismic ...