a secret cave that is. Stretching approximately eight miles, these beautiful underground passageways (dubbed Rio Secreto, or ...

The House budget includes $1.2 million to use drones for creating a 3D map to identify pollution sources threatening clarity ...

The underground river that flows into Pantai Baron in Gunungkidul, Yogyakarta, overflowed due to the flood that occurred on ...

In many parts of Brazil, rivers may be losing water to the ground instead of gaining from it. A recent study found that ...