Droughts can occur anywhere on the planet, but they are most prevalent and long-lasting in arid climates. Areas of the globe that experience high humidity and precipitation can have droughts when rainfall totals taper of... More »

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According to About.com, there are many causes for drought, but the most important one "relates to the amount of water vapor in the atmosphere, as this is what creates precipitation." Moist, low pressure systems tend to b... More »

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Because they are caused by a reduction in the normal amount of rainfall a region receives, droughts can occur anywhere on the planet. For example, some parts of the Amazon River basin were struck by drought in 2005. Howe... More »

Seasons occur on Earth because the planet is tilted on its axis at just over 23 degrees. Both the Southern Hemisphere and the Northern Hemisphere are tilted closer to the sun as the planet completes a full orbit. More »

One important fact about droughts is that they increase the risk of wildfires. Low moisture and lack of precipitation can create hazardous conditions in forests and range lands that may create wildfires capable of causin... More »

All droughts are ultimately caused by a lack of precipitation. This reduced precipitation does not have to be local; areas that receive water from rivers, for example, can be affected by a lack of precipitation thousands... More »

Desert biomes are dry climates that receive less than 50 centimeters of rain each year. Desert biomes feature one of four habitats—arid deserts, semi-arid deserts, coastal deserts and cold deserts. The desert biome cover... More »