Archaeologists just unveiled the remains of a 3,500 year old city in Peru. After eight years of research, experts have unearthed 18 structures so far, including residential homes and ceremonial ...

The Cairo Fossil Forest is the second oldest in the world. These forests mark a turning point in Earth's history because they changed the composition of the atmosphere, scientists say.

After eight years of research, experts have unearthed 18 structures so far, including residential homes and ceremonial temples. Experts believe the city—since named Peñico—was once a thriving urban ...