Scientists may have solved why the length of Earth’s day changes by a few milliseconds over decades. Subtle shifts in the ...
For practical purposes, we say that one day—the time it takes for Earth to rotate once on its axis—equates to 24 hours. In ...
Scientists have identified six previously unknown regions deep inside Earth’s lower mantle, revealing hidden variations in the planet’s deepest interior that had never been documented before. The ...
A powerful 7.4-magnitude earthquake struck northern Chile in July 2024—and it wasn’t supposed to be that strong. Unlike Chile’s infamous shallow “megathrust” quakes, this one ruptured deep inside the ...