There’s no geological artist quite like Earth’s plate tectonics. Thanks to this ongoing operation, we have mountains and oceans, terrifying earthquakes, incandescent volcanic eruptions, and ...

As more urban hikers take to trails such as the new Underline in Miami and Buffalo Bayou Greenway Connector in Houston, they are rediscovering Pittsburgh’s unique kind of city challenge. Over ...

Staying warm Tuesday. Shower chances, slightly cooler mid to late week. Then feeling like summer again next weekend.