Mudslides occur in areas where the land has been destabilized by the removal of vegetation, often as a result of wildfires or human activities. Mudslides tend to occur when there is a steep slope and may reoccur in the s... More »

The frequency of flooding depends on the region, although it is one of the most common natural disasters in the United States. Floodplains can flood every year, and floods are more common in the Midwest and coastal regio... More »

It is estimated that approximately 50 to 60 volcanoes erupt globally every month. Some volcanoes, such as Kilauea, are almost continually active. Other volcanoes only erupt once every few decades. More »

Mass wasting is a natural process, but it is influenced by roadway construction, removal of vegetation and the introduction of water to certain areas. Professor Stephen Nelson of Tulane University defines mass wasting as... More »

Large bodies of water take longer to warm or cool than the land does, so coastal regions generally see lower temperatures during the summer and warmer temperatures during the winter than areas that are further inland. Wh... More »

Global warming results primarily from human activities that cause an increase in the amount of greenhouse gases in the atmosphere, which in turn compromise the atmosphere's functional capacities, including regulating tem... More »

Hurricanes and tropical storms, tornadoes, floods and wildfires are common natural disasters. Earthquakes, heat waves, droughts and thunderstorms are also disasters. Hurricanes and tropical storms are some of the most da... More »