Scientists say small changes in the way the Earth orbits the sun hold the key in major global changes in climate, like ice ...

During the Pliocene, three million years ago ... process of the Earth's crust after the big ice sheets of the last Ice Age have disappeared. We will discuss local sea level changes in a separate ...

Although no longer native to North America, the ancestors to today’s aerodynamic rodents likely made the most of the Early Pliocene’s ... the Pleistocene Ice Ages led to the isolation of ...