Summer solstice is the longest day of the year. Here's why it can occur on June 20, June 21 or June 22. Plus: Solstice 2025 ...

was the world’s earliest great multispan cantilever bridge, and at 2,529 m remains one of the longest. It opened in 1890 and continues to operate as an important passenger and freight rail bridge.

The longest day of the year falls on either June 20 or 21 every year in the Northern Hemisphere. Here's everything you need to know about the science, and timing, of the summer solstice.

A wildlife crossing bridge spanning North Oracle Road near Oro Valley will be named for the late Ann Day, a former Pima County supervisor who championed the county’s wildlife-preservation efforts.