The Pittsburgh Zoo & Aquarium in Highland Park is welcoming some new — well, actually really, really old — animals. More than 50 animated life-like prehistoric figures from 31 species come to life in ...

Earth naturally cycles between ice ages and warm periods based on three ... scientists gain crucial context for evaluating ...

The Pittsburgh Zoo and Aquarium will soon debut a new Ice Age exhibit. The temporary exhibit, "Ice Age: Frozen in Time," runs ...

Most ice ages in Earth's history have lasted a few ... are vastly different from the rapid climate changes caused by human activities today. NASA and other climate organizations emphasize that ...