Scientists in China report they've confirmed a link between an 8.5-year signal and a "wobble" in Earth's core that challenges earlier knowledge.
The long-lost remnants of the planet Theia are far beneath our feet.
The remains of the lost ancient continent of Argoland have finally been discovered, scientists report.
Deep inside the Earth, something strange is happening that scientists are trying to explain.
A previously unknown layer of partially-molten rock extends below much of the planet's surface, and could illuminate mysteries in plate tectonics.
The surprising finding might solve longstanding mysteries about climate and geological phenomena.
More water than all of Earth's oceans is thought to reside deep inside the mantle, and a newly-discovered gem just shed more light on the mystery.
The Great Unconformity has baffled geologists for a century. New research points to glaciers being the culprit.
The Great Unconformity, a bizarre gap in the geological record, may be linked to the breakup of an ancient supercontinent.
Scientists discovered tectonic motion on our sister planet in observations from a spacecraft that died there decades ago.
Lightning could have been a major source of the element phosphorus, which is necessary for life, on early Earth.
The Americas have been drifting apart from Europe and Africa at a rate of four centimeters a year, and a new study has revealed the dramatic processes at play.