David A. Johnston was killed just hours after his last ever picture was taken. The volcanologist from Chicago, US was once ...

This striking satellite photo shows the unusual shape of Spirit Lake, which was transformed into a giant anatomically inaccurate heart by the explosive eruption of Mount St. Helens in 1980.

learn how attacks from the mysterious Sea Peoples led to the collapse of the Bronze Age. Then, view unbelievable before and after photos of the Mount St. Helens eruption in 1980.