In this 2,000-acre Pennsylvania forest, visitors can walk along a long-forgotten turnpike and discover a rare mix of nature and history.

Researchers in Hawaii are pioneering a method to recycle the islands’ derelict fishing nets and residential plastic trash into asphalt roads.

The initiative is designed to tackle widespread traffic congestion caused by vehicles parked haphazardly on roads, in no-parking zones, or left abandoned for extended periods ...