about 1 year
For ages, life on Earth and its origin has been a big fascination for mankind. The ancestry of most animals can be traced back to 541 million years ago – when an event called the Cambrian Explosion abruptly birthed a myriad of familiar creatures in the sea. It was a time when the ancestors of crabs, clams, and jellyfishes dominated the oceans. Little did people know, there was a time before the Cambrian where life looked like nothing that exists today.