In the 1930s, workers bored a 13-mile tunnel beneath Mt. San Jacinto. Here's a look inside the engineering feat that carries ...

Arbor Day volunteers planted new trees across the country Friday — much as they’ve done for the past 150 years — but ...

When wildfires roar through California’s hillsides, leaving ashen scars where vibrant life once thrived, it’s easy to feel ...

Archaeologists in Mexico have discovered ancient Mayan pottery in a cave system a little more than 10 miles away from downtown Playa de Carmen.