The Cambrian Explosion is a landmark moment in the history of life on Earth when many of the major groups of animals first ...

Dramatic new video shows the series of explosions that rocked Tianjin, China and killed dozens.

Brenda Valencia, a dedicated mother, was arrested by federal agents in plain clothes, sparking fear and outrage in the San Diego community.

A new study of ancient fossil trails pushes the origins of complex life deeper into Earth’s history, before the Cambrian Period began.

Video appears to show an explosion set off by federal agents as they entered a Huntington Park home in an early morning law enforcement operation that startled a woman who was inside the house ...

The Cambrian explosion was an extraordinary phenomenon in the evolution of life on the planet that led to the emergence of many animal phyla and the diversification of species. During this period, ...

A bunch of blue jellyfish floating in the water. Photo by James Jeremy Beckers Jellyfish belong to the phylum Cnidaria, one of the oldest animal groups on Earth. Fossil records indicate that jellyfish ...

New fossil evidence suggests the Cambrian Explosion, once thought to have occurred 530 million years ago, may have begun 15 million years earlier.