The Mississippi River is one of the longest and most biologically diverse rivers in the United States, flowing through ...

A rapid climate collapse during the Late Ordovician Mass Extinction devastated ocean life and reshuffled Earth’s ecosystems.

Buried in Australia's so-called dead heart, a trove of exceptional fossils, including those of trapdoor spiders, giant ...

A mass extinction created the ecological conditions that set the stage for a dramatic shift in marine life.