Earth’s history is filled with incredible milestones, and the emergence of the first animals is one of the most captivating.

The microorganisms that live near such plumes have led some scientists to suggest them as the birthplaces of Earth’s first life forms. Organic molecules may also have formed in certain types of clay ...

Scientists discovered complex life may have started 1.5 billion years earlier than previously thought thanks to phosphorus.

Many scientists think these primordial seas gave rise to life ... shielding the Earth's surface from harmful solar radiation. The first multicelled animals appeared in the fossil record almost ...

The first creatures ... all the animals depending on that ice for hunting, resting, reproducing, and other key life activities lose the platform on which their existence depends. At the other end of ...