The Colorado Department of Public Health and Environment issued an ozone action day alert for the Front Range Urban Corridor.

A compilation of the week's rail news. offering a dedicated focus on rail transit from the progress of projects around the world to the innovation driving enhanced service and maintenance practice.

To understand the threats to the Pacific Coast Highway, a reporter and photographer hit the road. By Livia Albeck-Ripka Livia Albeck-Ripka is a general assignment and breaking news reporter for ...

Near-shore tsunamis, those triggered by earthquakes just off the coast, could pose a particularly dire risk for California’s ...

The land at stake ranges from the far north's dense coastal forests to Southern California’s great expanses of brush. Experts ...

Impact: The 1933 earthquake was Southern California’s deadliest in the modern record, leaving nearly 120 dead and causing $40 ...

A map shows areas of California where high winds and dry thunderstorms may easily cause fires, and residents have been told ...

The Beehive State performed well across the board, excelling in one key metric, “access to scenic byways,” where it ranked ...

Officials behind Orange County’s newest conservation area, the nearly 400-acre Randall Preserve, are seeking input as they ...