With threats of avian flu and lead poisoning, biologists are working overtime to care for a species that nearly went extinct.

The collapse of the Francis Scott Key Bridge on Tuesday in Baltimore already ranks among the biggest bridge breakdowns the country has ever seen. Due to Arizona's infamous lack of bodies of water ...

The Theodore Roosevelt Lake Bridge along State Route 188 is Arizona’s longest. Spanning 1,080 feet, the iconic bridge connects drivers between Maricopa and Gila counties while offering ...