5 Events That Completely Changed The Earth

Earth is far from a static place. That's true in the present, but it's even more apparent when you look to the past, as Earth ...
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At Least 541 Million Years Old, These Might Be The First Animals To Evolve On Planet Earth

Animal life is a recent addition to Earth, relatively speaking. The planet formed about 4.5 billion years ago, with microbial life likely emerging between 4.3 and 3.7 billion years ago. It was not ...
Study Finds

Ancient Chemical Fingerprints Point To Sea Sponges As Earth’s First Animals

Chemical fossils from 635-million-year-old rocks suggest sponges were among Earth’s first animals, reshaping the story of early life.

Over 541 million years old, this species could be Earth’s first-ever animal

Researchers found “chemical fossils” in ancient rocks containing 30-carbon steranes, a stable form of sterols present in the ...

Earth's first animals may have been sea sponges, study finds

A team of scientists digging up some of the Earth’s oldest rocks has uncovered new chemical evidence that Earth’s first ...