Let’s go back 541 million years. Earth was about to throw the most spectacular evolutionary party in history. For billions of years, life had been playing it safe with single-celled minimalism. Then ...

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea. Scientists recovered dozens of fist-size Cambrian rocks estimated between 502 million ...

The Cambrian period, often celebrated for the “Cambrian explosion”, marked a pivotal phase in the history of life when early arthropods emerged and rapidly diversified. These organisms not only ...