For years, the Jensens have been puzzled by a huge nature mural in their home near the Minnesota State Fairgrounds.

A new study highlights how life possibly evolved prior to and during the rise of Earth’s oxygenated atmosphere.

A new look at fossils from the Cambrian Period around 500 million years ago has revealed that some of the earliest animals spent time on mudflats that were sometimes exposed to the air – a find that c ...