The early earth / editor, D.R. Nelson. Earth's formation and first billion years / D.R. Nelson. The early Precambrian stratigraphic record of large extraterrestrial impacts / B.M. Simonson, G.R.

A fascinating fossil discovery in remote South Australia sheds light on an important chapter in the history of life on Earth: the origins of Ecdysozoa, a vast superphylum that includes molting animals ...

Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emergence of complex, multicelled life-forms almost ...

Evidence from Southwestern deserts suggests that oxygen-breathing organisms arose on land rather than in the seas. Paul Knauth scrambled up a steep, rocky canyon in the Black Mountains of Death Valley ...

A new radioactivity model of Earth's ancient rocks calls into question current models for the formation of Earth's continental crust, suggesting continents may have risen out of the sea much earlier ...