At 4,000 miles long and 30–40 miles wide, the East African Rift (EAR) system is one of the geologic wonders of the world.

At an incredible 5,800 metres (19,000ft) above sea level, this road has been declared the world's highest and climbs up the side of an active volcano.

The USGS Hawaiian Volcano Observatory spearheads Volcano Awareness Month each January on the Island of Hawaii. This year, in addition to in-person talks and walks around the island, we hosted an art ...

Letchworth isn’t the only place to witness this rare winter phenomenon. Along the frozen shores of Lake Ontario, water pushes ...