Astronomer Avi Loeb suggests that a quasi-satellite may be the "relic of an interplanetary mission by humanity from the 1960s ...

The Ediacaran Period of Earth’s past was poorly understood, and the enigmatic fluctuations and magnetism could have been ...

Ancient rocks reveal a potassium-40 deficit, the first physical evidence of the proto-Earth and insights into early planetary ...

Researchers have discovered chemical fingerprints of Earth's earliest incarnation, preserved in ancient mantle rocks. A unique imbalance in potassium isotopes points to remnants of “proto Earth” ...

The images hammered into the sides of a goblet found in Palestine give us an idea of what people living more than 4000 years ...

This shift in Earth’s tectonic tempo had profound implications above ground. With less volcanic carbon dioxide heating the ...

Cosmic dust can tell scientists about how ice covered Earth during the last ice age. This dust is leftover debris from ...

Ancient trees may have played a key role in regulating Earth's climate during the last ice age—by 'breathing' less ...