Watch dramatic footage of violent volcano eruptions that caused immense damage, including the Mount Pinatubo eruption in 1991, one of the largest eruptions of the 20th century.
Take a look at the major earthquake disasters over the past years and determine the worst one out of them.
Witness some of the greatest fire disasters of the last century and decide which one's the worst.
Eyewitness accounts of disasters, the damage of floods and into EU's description of "a covering by water of land not normally covered by water."
Witness some of the greatest geological disasters of the last century and decide which one's the worst.
