After using a technique called molecular clock analysis, researchers have proposed that the origin of animals could be 200 ...

Our planet teems with an estimated 8.7 million species, yet a heartbreaking number of them exist in such small populations that most people will never see them outside of a photograph. These are ...

A team of MIT geochemists has unearthed new evidence in very old rocks suggesting that some of the first animals on Earth were likely ancestors of the modern sea sponge. The newly identified chemical ...

Some animals cling to survival in numbers so small that a single storm, a single poacher, or a single bad breeding season ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Late one summer ...

In the shadow of South Australia's largest mountain range beneath the outback soil lies a fossil record that reveals a rich history of life on Earth. Fossils found at Nilpena Ediacara National Park ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The first animals to inhabit the Earth may have been sea sponges, a new ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. This article is more than 2 years old. We occasionally see ...

Q. I get different answers on the Internet when I ask what is the rarest animal in the world. What’s the correct answer? A. In the strictest sense, the answer to your question could change daily.